Must-Know [LATEST] Denodo Interview Questions and Answers
Last updated on 18th Nov 2021, Blog, Interview Questions
Looking for the top Denodo interview questions to prepare for your interview. Go through some of the best Denodo interview questions with detailed answers before you get ahead. Denodo to become an Expert in Denodo and learn all the instructions required to install and configure the server. Therefore, Denodo professionals need to encounter interview questions on Denodo for different enterprise Denodo job roles. The following discussion offers an overview of different categories of interview questions related to Denodo to help aspiring enterprise Denodo Professionals.
1. Why is Denodo inexpensive and quick?
The process of replication is the key to the agile, systematic, and prompt nature of Denodo. Also, in this process, there is no requirement for information storage or information transfer. It can be managed, monitored, and used from anywhere, anytime without any hassles. This is the main reason it allows users to stick to a reasonable budget and be ahead of time.
2. What is Denodo virtualization?
Data virtualization is a logical data layer that integrates all enterprise data siloed across the disparate systems, manages the unified data for centralized security and governance, and delivers it to business users in real time.
3. What is denodo virtual DataPort?
Denodo Virtual DataPort is a global solution for integrating heterogeneous and distributed data sources. Virtual DataPort the data that are relevant to the company, regardless of their origin, format and level of structure.
4. Explain the concept of Denondo in detail?
Denodo is ranked as the most advanced package today due to its modern and high-end approach to data management. The particular platform holds a cogitation layer that prevents data from getting indulged into data knots and unnecessary complexities. The specific interface also allows users to obtain highly detailed information and specification about specific data. The entire navigation and operational approach are user-friendly.
5. How does Denodo deliver monitoring information?
The Denodo Monitor runs indefinitely and it gathers information about these Servers periodically and logs it into tab-separated values files. The Denodo Monitor launches three types of “monitors” that record the activity of one or more Denodo servers and the host where they are running.
6. How do I install a denodo monitor?
- To start using the Denodo Monitor, follow these steps:
- Go to the directory <'DENODO_HOME>/tools/monitor.
- On Windows, uncompress the file denodo-monitor. zip.
- Edit the file conf/ConfigurationParameters. properties to configure it.
- To start the Denodo Monitor go to bin, in the directory of the Denodo Monitor and do this:
7. Is the particular approach used for a data warehouse setup?
The Denodo can add value and agility to the entire infrastructure of a data warehouse. It is widely used for extending and prolonging infrastructure which can be performed in a comparably easier way. The Denodo interface also allows Warehouse to move, prototyping, and aligning several data resources to establish virtual information emporiums. The particular process assimilates with ESB to produce real-time information for the application of an SOA.
8. What you understand by the abstraction layer in the Denodo platform?
The abstraction layer is one of the key features in the entire procedure. It is utilized between actual information resources and derivational sources that is ESB, ETL, and relevant middleware operation to enhance business adaptability and add quality to business technology.
9. The difference between information federation techniques?
The Denodo interface is much more advanced than that of the information federation procedure. It is an interface that allows facilities like write, observe, read, and admittance to all categories of information and resources. Unlike Federation procedures, the particular procedure also facilitates users to utilize their data safely with its high-security features.
10. What is Launching Denodo?
11. What is true about data virtualization?
Data virtualization is a logical data layer that integrates all enterprise data siloed across the disparate systems, manages the unified data for centralized security and governance, and delivers it to business users in real time.
12. How do I connect to a denodo database?
Go to Database > Create Database Connection and use the following settings for the connection: Driver (JDBC): Denodo 8.0. Database URL: jdbc:vdb://localhost:9999/tutorial. Database Userid: admin.
13. Explain the term virtualization?
Virtualization is one of the most significant innovations in technology. It is a technology that allows converting hardware into a virtual form or software. It is broadly used in today’s age and has been a significant segment of the Information technology industry. The technique of virtualization is relevant to Denodo as it mainly aims to convert conventional information and make it much more ascendable.
14. How do I access denodo data?
- Accessing Denodo using an ODBC client
- Open a new workbook.
- Select Data > From Other Sources > From Microsoft Query.
- In the pop-up, select “Denodo Tutorial” and click on Ok.
- Select “amount_due_by_client” view.s:
15. Explain the concept and function of Zone Data Collector (ZDC)?
|The data collector stocks versatile types or categories of information that involve published operation, session.||The ZDC helps in interacting with the zone-specific information with the information present in other zones.|
16. What is the primary format for tackling information quality requirements of DV?
The Denodo interface is suffused with in-built techniques and tools that provide an ample amount of leverage to users. The tools include the facilities of information pairing, transforming, editing. The mentioned areas are solely stationed on the regulations of ‘apply-on-the-fly.’ The trend of tackling involves detecting or tracking information sources which has made the entire operation much simpler for all categories of users.
17. Elaborate on the relationship between data virtualization and the IT industry?
Data virtualization plays a magnificent role in redefining the norms and trends of the IT industry. The high-end and futuristic features of the Denodo are equipping the information technology domain with ample agility and dependability in recent years. The BI techniques and tools along with the advanced virtualization technology have facilitated the IT industry in several forms and under multiple names but the most significant and only aim is to improve and advance data management and advancement in every possible form.
18. How does Denodo allow the assimilation of Web data?
The Internet is one of the most versatile, vast, and rapidly growing information sources. Unlike other approaches available in the market stack, the Denodo consists of semantic techniques, internet automation, and unformed information, which are often efficiently used to add instant value to a business.
19. Name the top proficiencies of Denodo?
- Rational abstraction
- Agile information services
- Consolidated information security and monitoring
- Analytical and non-analytical semantic integration
- Data Federation
There are several capabilities of Denodo but some of the key capacities include:
20. How does data virtualization work?
21.How does the process help in obtaining data value in a short span of time?
First of all, the operation and navigation of data are highly flexible in the particular process as it does not require physical storage or allocating location nor does it need data transfer. The Denodo lets the user get access to real-time information and data and allows dynamic operational leverages at the same time. It is one of the top-most reasons behind business owners and industrialists using the same as their right hands in making the most out of the data.
22. Does the particular process aid in sound and agile decision making and how?
Definitely, the advanced approach poses a massive impact on decision making which is a hundred percent positive. The specific process allows traders or business owners to access, operate and navigate data completely on their own. In order to cope up with the rapid-paced pragmatic occurrences of the business industry, professionals require automated services and business intelligence assistance. Therefore, if business individuals do not have to entirely depend on manual experts to seek essential data insights and directly obtain it from a much agiler and automated procedure, the entire functionality shall turn out fast and productive.
23. How does Denodo help in navigating a large database and obtaining the actual data?
The process with its inbuilt tools and techniques breakdowns and normalizes the mass of data and makes it accessible from one virtual layer which eventually gets interlinked with discordant data sources. You will automatically get the leverage to proceed in an agile and disciplined way with the help of DV and shall be finally able to concentrate on the desired or target data.
24. How can business Intelligence (BI) leverages be spread or expanded to the entire employee chain in an organization?
As it is known that one of the critical features of Denodo includes the abstraction layer, you can directly choose to develop the same. This facility will eventually shield the basic or elemental complexities of information procedures from the end of the business user, and the advantage of self-navigation of Business Intelligence (BI) can easily be experienced by all employees involved in the business with maximum data security.
25. State the differences between whole-virtualization and Para-virtualization?
Both of the above-mentioned categories are tied to one single pole that is the hardware virtualization. In the case of full virtualization, the VMS are heedless of the fact that they exist in a virtualized space. Hence the guest VMS interacts with the accelerated apparatus developed by the hosting although the VMS considers the same to be original hardware.
On the other hand, the process of Para-virtualization involves absolute alertness from the guest VMS that it exists in a virtualized environment. Henceforth, in case of any concern or need for resources, it straightway places command to the hosting system.
26. What is data source in denodo?
To retrieve data from a repository of data (a database, a SOAP web service, an XML file, etc.), first you need to create a data source in Denodo. A data source represents one repository of data. Then, you need to create one or more base views over each data source. The base views represent the entities in the source.
27. What is Hosted architecture and how does it work?
A hosted architecture is storage where the package of virtualization is equipped in the form of an application within the existing hosting system. This generally depicts that the virtualization layers are entirely dependent on the hosting system for hardware and resource maintenance. One of the blazing examples of the above-explained subject is the VMware server.
28. What are the best sources to seek virtualization services and facilities from?
- Microsoft Hyper-V
- VMware server
To be specific, there are no definite ways to obtain the particular service and shall ultimately depend on your preferences and business requirements although some of the top recommendations that have been predominating the specific field and have been of the utmost assistance to several business owners include the following:
29. Provide an average idea of the memory that can be used while using services from Denodo?
Although it shall mostly depend on your business infrastructure and performance requirements, the ultimate capacity of memory that can be suffused to a VM is 8GB. The memory capability also depends on the host machine. You have to keep the mentioned criteria in mind prior to installing a Denovo facility for your business.
30. What is Denodo architecture?
31. How data virtualization is different from ETL?
Data virtualization leaves the source data where it is and delegates the queries down to the source systems while ETL copies the data from the source system and stores it in a duplicate data store.
32. Explain the term hypervisor and what its fundamental needs in the industry include?
The term as mentioned earlier has spread its leverages and advantageous facilities widely and rapidly in the industry. Hypervisors are operations or functions that separate or detach the web applications, packages, and operating systems (OS) from the actual or physical hardware. Hypervisors have also gained sheer advancement and modification in recent years from the traditional functionality trend.
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33. Why Is Denodo Inexpensive And Quick ?
The technique of replication is the key to the agile, systematic and active nature of Denondo. Also, in this method, there is no requirement of a statistics garage or information transfer. It may be managed, monitored and used from everywhere, anytime with no hassles. This is the principal motive: it permits customers to stick to inexpensive finances and be ahead of time.
34. How Does The Concept Of ‘Replication’ Help Business Professionals ?
In this fast transferring industry, commercial enterprise people regularly undergo panicky situations that are quite affordable. Business experts require gear and strategies which can offer development and facility beyond records management. This is wherein the procedure of replication is exceptionally useful. It is of utmost use at some stage in disaster eventualities and facts loss.
35.Explain About The Performance Of Denovo In Few Lines ?
The Denodo interface is especially used for big-scale business companies due to its sheer potential to manipulate huge and complicated databases. The features like performance upsurge strategies, intelligence cache, routine lower back up, rate and regulation based totally optimization and operation devolution can be implemented in Denodo. It is one of the top-ranked procedures in statistics virtualization when it comes to industrial use. It is usually utilized for essential and considerable task works.
36. What is JDBC in WebLogic?
Java Database Connectivity (JDBC) is a standard Java API that consists of a set of classes and interfaces written in the Java programming language. Multitier drivers that provide vendor-neutral database access. A Java client application can use a multitier driver to access any database configured in WebLogic server.
37. What Type Of Project Works Or Assignments Are Suitable For Denodo According To You ?
The best appropriate initiatives for the specific procedure include tasks worrying versatile and advanced requirements. Denodo deliberately broadens and heightens the area of operation for the duration of vital or crisis situations and allows customers to try to find real-time facts reviews. Assignments may consist of the systematic BI, facts for one-time purchaser view, rational statistics offerings are a number of the duties wherein it is able to modify or make contributions to the conventional strategies of Data management.
38. What is SSL in WebLogic?
Weblogic SSL Configuration. SSL stands for secure sockets layer. It is a security protocol to enable Web sites to pass sensitive information securely in an encrypted format. It is based on the RSA Data Security’s public-key cryptography.
39. Explain What You Understand By Abstraction Layer In Denodo Platform ?
The abstraction layer is one of the key functions within the entire procedure. It is applied between real information assets and derivational assets that is ESB, ETL and applicable middleware operation to decorate commercial enterprise adaptability and upload high-quality to commercial enterprise technology.
40. What is the Denodo platform?
41. What is LINQ data source?
The LinqDataSource control enables you to use LINQ in an ASP.NET Web page by setting properties in markup text. The LinqDataSource control uses LINQ to SQL to automatically generate the data commands.
42. Why Denodo Is One Of The Highly Suggested Procedures In The Business Realm Today ?
Most of the groups and industries inside the cutting-edge age are records-driven, and the need for agile and progressive tactics is sizable. Organizations get the opportunity to system complicated facts and attain an agile and systemized model of the equal without having to generate any additional or replicated records garage for allocation.
43.Define The Concept Of Hypervisors ?
The hypervisor is referred to as a virtual machine supervisor that aids multiple working structures to make use of one hardware website hosting gadget. This has simplified the general running procedure and supplied the business enterprise with several facilities.
44. What is datasource C#?
The data source is used to pull the data from the database and populate them in the controls. The binding navigator is used to automatically navigate through the rows in a table. The data grid in C# can connect to the database and display all the values from the table in a grid-like format.
45. Explain The Execution Of Roi In The Denodo Platform ?
The ROI performs an essential function within the specific platform because it possesses a huge reduction in areas like garage, improvement, software program, hardware, and price of upkeep. It is one of the maximum substantial blessings of the DV platform.
46. State the differences between full-virtualization and Paravirtualization?
|In the case of full virtualization, the VMS are heedless of the fact that they exist in a virtualized space. Hence the guest VMS interacts with the accelerated apparatus developed by the hosting although the VMS considers the same to be original hardware.||The process of Para-virtualization involves absolute alertness from the guest VMS that it exists in a virtualized environment. Henceforth, in case of any concern or need for resources, it straightway places command to the hosting system.|
47.What Is The Primary Format Of Tackling Information Quality Requirements Of Dv ?
The Denodo interface is suffused with in-constructed techniques and gear offers an adequate quantity of leverage to customers. The equipment includes the centers of information pairing, transforming, editing. The mentioned areas are completely stationed at the policies of ‘apply-on-the-fly.’ The fashion of tackling involves detecting or monitoring statistics assets which has made the complete operation much simpler for all categories of customers.
48. How do you start a denodo?
- Control Center
- Click on Virtual DataPort in the top-left.
- Click on the blue play button next to Virtual DataPort Server (the first one from the top) to start the Virtual Dataport Server.
- When the text before that play button says “Running”, launch the Virtual DataPort Administration Tool by clicking the “LAUNCH” button.
49. How Denodo Allows The Assimilation Of Web Data ?
The Internet is one of the most flexible, significant and unexpectedly developing facts sources. Unlike other tactics available inside the market stack, the Denodo consists of semantic strategies, net automation, and unformed information, that are regularly efficiently used to add instant price to a business.
50. What is data virtualization?
51. Does denodo store data?
Quickly connect disparate structured and unstructured sources. Catalog your entire data ecosystem. Data stays in the sources and it is accessed on demand, with no need to create another copy.
52. What is denodo data catalog?
The Data Catalog is a software distributed as a web application included as part of the Denodo 8.0 that offers data analysts, business users and application developers searching and browsing capability of data and metadata in a business friendly manner for self-service exploration and analytics.
53. What is the purpose of data virtualization?
Data virtualization enables business users to consume data through reports, dashboards, portals, mobile apps, and Web applications. The Consume layer enables a single point of access and interaction with the underlying data sources, as well as abstracted data views in a standard delivery format.
54. How Denodo Helps In Navigating Large Database And Obtain The Actual Data ?
The manner with its inbuilt tools and techniques breakdowns and normalizes the mass of statistics and makes it available from one digital layer which sooner or later gets interlinked with discordant information resources. You will mechanically get the leverage to proceed in an agile and disciplined manner with the help of DV and shall be eventually capable of give attention to the preferred or goal information.
55. What are the three data sources?
The bulk of big data generated comes from three primary sources: social data, machine data and transactional data.
56. What are V’s of big data?
Share. Volume, velocity, variety, veracity and value are the five keys to making big data a huge business.
57. What is the preferred way to connect to database from virtual DataPort?
The preferred method of connection to the Virtual DataPort server is through a JDBC connection; it has better performance than the other client connections. To connect to the Virtual DataPort server, you will need the Denodo JDBC driver and the URI of the Virtual DataPort server.
58. What is Oracle data source?
A data source is a Java object that implements the javax. sql. DataSource interface. Data sources offer a portable, vendor-independent method for creating JDBC connections. Data sources are factories that return JDBC connections to a database.
59. What is Java data source?
A DataSource object is the representation of a data source in the Java programming language. In basic terms, a data source is a facility for storing data. It can be as sophisticated as a complex database for a large corporation or as simple as a file with rows and columns.
60. What is a general administration guide?
61. Provide An Average Idea Of The Memory That Can Be Used While Using Services From Denodo ?
Although it shall mainly rely on your enterprise infrastructure and overall performance requirements, the final potential of memory that may be suffused to a VM is 8GB. The memory capability also depends on the host machine. You have to preserve the cited standards in thoughts previous to putting in a Denovo facility in your commercial enterprise.
62. What is data source in WebLogic?
A data source is an object that enables a Java Database Connectivity (JDBC) client to obtain a database connection. WebLogic JDBC data sources provide database access and database connection management.
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63. What is SQL DataSource?
An SQL database data source represents a relational database or another source of data that can be accessed using an SQL database DSA. A wide variety of commercial relational databases are supported, such as Oracle, Sybase, and Microsoft SQL Server.
64. What is JDBC vs ODBC?
ODBC is an SQL-based Application Programming Interface (API) created by Microsoft that is used by Windows software applications to access databases via SQL. JDBC is an SQL-based API created by Sun Microsystems to enable Java applications to use SQL for database access.
65. What is the use of Denodo?
The Denodo Platform delivers breakthrough performance in big data, logical data warehouses, and operational scenarios; it accelerates adoption with data virtualization in the cloud; and it expedites the use of data by business users, with self-service data discovery and search.
66.Is Denodo an ETL tool?
Data Virtualization and ETL | Denodo.
67. What is the Denodo tool?
Denodo Express connects with and integrates on-premises, in the cloud, structured, unstructured and big data sources. These sources are then delivered and available to end users, as well as enterprise applications, dashboards, portals, Intranet, search and other tools.
68. Is Denodo a database?
The Denodo server can contain different virtual databases. A virtual database is a schema composed of data sources, views, stored procedures, web services, etc. admin: default database for Denodo Virtual DataPort.
69. Is Denodo open source?
Hortonworks Certified Technology Program simplifies big data planning by providing pre-built and validated integrations between leading enterprise technologies as Denodo and Hortonworks Data Platform (HDP), the industry’s only 100% open source Big Data platform built on Apache Hadoop.
70. Define Denodo model bridge?
71. What is the Denodo database?
The Denodo Platform is industry’s only data virtualization platform that offers all the necessary capabilities of a logical data fabric – an active data catalog for semantic search and enterprise wide data governance, industry leading smart query acceleration powered by AI, automated cloud infrastructure management for
72.How do I create a Denodo database?
To create a database with normal authentication, click Database management on the Administration menu. In this dialog, click New database. The Tool requests the following data (see Creating a new database with “Normal” authentication type): Name of the database.
73. What is Denodo in AWS?
Denodo is an AWS APN partner and part of the Amazon Redshift ready program. Denodo’s native connectivity with Amazon Redshift and other on-premise and cloud data sources helps companies integrate petabyte-scale data in real-time by leveraging Denodo’s performance optimizer.
74. Is SQL Server data source?
Data source is the name of the MS SQL server instance you are connecting to and Inital Catalog is the database name you want to connect to. EG: You have a default instance of MS SQL server Express and a database named Northwind.
75. What does Denodo do?
Denodo is the leader in data virtualization providing data access, data governance and data delivery capabilities across the broadest range of enterprise, cloud, big data, and unstructured data sources without moving the data from their original repositories.
76. What is the Denodo data catalog?
The Data Catalog is a software distributed as a web application included as part of the Denodo 8.0 that offers data analysts, business users and application developers searching and browsing capability of data and metadata in a business friendly manner for self-service exploration and analytics
77. What is Denodo Express?
The Fastest Way to Data Virtualization. Free, for Life. Denodo Express offers the essential features of Denodo’s award-winning Data Virtualization platform in an ultra-easy-to-use package. You get on-line community-based support and tons of online tutorials and how-to videos from the experts at Denodo.
78. What is virtualization in cloud computing?
Virtualization as a Concept of Cloud ComputingIn the context of cloud computing, virtualization is a technique that makes a virtual ecosystem of storage devices and the server OS. In that case, virtualization enables users to use various machines that share one particular physical instance of any resource.
79. What is a data virtualization tool?
Data virtualization tools integrate data from heterogeneous data sources, instead of extracting and loading them directly onto a single platform, like Enterprise Service Bus (ESB), Extract-Transform-Load (ETL), and other middleware applications.
80. What is data virtualization for logical data warehouse?
81. What does a data Catalogue do?
Simply put, a data catalog is an organized inventory of data assets in the organization. It uses metadata to help organizations manage their data. It also helps data professionals collect, organize, access, and enrich metadata to support data discovery and governance.
82.What is the data catalog in the data lake?
The data catalog is designed to provide a single source of truth about the contents of the data lake. The comprehensive data catalog can be used to search for all assets in the data lake, and the HCatalog can be used to discover and query data assets in the data lake.
83. What is Azure Data Catalog?
Azure Data Catalog is an enterprise-wide metadata catalogue that makes data asset discovery straightforward. It is a fully-managed service that lets you—from analyst to data scientist to data developer—register, enrich, discover, understand and consume data sources.
84. Can Denodo connect to Snowflake?
To connect to Snowflake, you need to create a JDBC data source within the Denodo Platform. Then you can create the base views that will represent the Snowflake tables. From the Design Studio, create a new JDBC data source by navigating to “File > New > Data source > JDBC”.
85. Is Denodo a data hub?
Snowflake and Denodo Cloud Analytical Data Hub: Connect to All Data for Advanced Analytics | Denodo.
86. Is Snowflake a data hub?
With both public and private options, the Snowflake Data Exchange creates a powerful internal or external data hub that redefines how companies acquire, utilize, share, and monetize data in the Cloud economy.
87. What are data virtualization tools?
Data virtualization can be used to create virtualized and integrated views of data in-memory, rather than executing data movement and physically storing integrated views in a target data structure. It provides a layer of abstraction above the physical implementation of data, to simplify querying logic.
88. What is unique about Snowflake Architecture?
Snowflake has come up with an advanced and unique architecture that is a combination of shared-disk and shared-nothing architectures. It uses a central data repository to store data consistently and makes it available to access from all compute nodes in the platform. Similar to shared-nothing architecture, Snowflake also executes queries by using MPP (massively parallel processing) compute clusters where every node in the cluster stores a certain amount of the whole data set locally.
89. Explain the Database storage layer in Snowflake?
Whenever the data gets loaded into Snowflake it arranges the data into optimized, compressed and columnar format. After this process, the data gets optimized and then stored in cloud storage.
Snowflake looks after how the data gets stored which include data organization, compression, structure, file size, statistics, metadata, and many other aspects related to data storage. All the data objects stored in Snowflake are invisible and inaccessible. One can only access the data objects by running SQL query operations using Snowflake.
90. What is data virtualization reference architecture?
91. What is the Query Processing layer in Snowflake architecture?
All the query executions are performed in this processing layer. Snowflake uses “virtual warehouses to process queries. Each virtual warehouse is an MPP (massively parallel processing) compute cluster which consists of multiple nodes allotted by snowflake from a cloud provider.
Each virtual warehouse in the query processing layer is independent and does not share its computational resources with any other virtual warehouses. This makes each virtual warehouse independent and shows no impact on the other virtual warehouses in case of any failover.
92.What is the Cloud Services layer in Snowflake architecture?
The Cloud Services layer consists of a set of services that coordinates multiple tasks across the Snowflake platform. All these services tie together and work with great co-ordination to process user requests, from login to query dispatch. This layer also executes computer instances assigned by Snowflake from the cloud manager.
93. How can we access the Snowflake data warehouse?
- Web User Interface
- JDBC Drivers
- ODBC Drivers
- Python Libraries
- SnowSQL Command-line Client
Following are the typical ways one can use to access:
94.What are the advantages of a Snowflake database?
- High-speed performance
- Supports both structured and unstructured data
- Concurrency and accessible
- Seamless data sharing
- High availability
- High security
Snowflake is natively built for the cloud and addresses many issues that are not solved by the traditional warehouse systems. Following are the five core advantages that we gain by using the Snowflake data platform: