1. What is dynamic programming in ABAP?
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Dynamic programming allows certain program elements or data objects to be determined at runtime. Field symbols, data references, and dynamic data access techniques can be used when application requirements cannot be fully determined during design time.
2. How would you use a hashed internal table?
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A hashed internal table is useful when frequent access is performed using a unique key. It provides key-based access without relying on sequential processing and is suitable for scenarios where fast lookups are important.
3. What is the purpose of a sorted internal table?
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A sorted table automatically maintains its entries according to its defined key. It is useful when ordered data and efficient key-based or range-based access are required.
4. How can you prevent unnecessary database access inside loops?
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I would avoid SELECT statements inside frequently executed loops where possible. Required data can often be retrieved in advance using appropriate queries and then processed through internal tables with suitable keys.
5. What is the purpose of SQL trace in ABAP performance analysis?
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SQL trace helps developers examine database statements executed by an application. It can reveal expensive queries, repeated database access, and other SQL-related performance issues that require optimization.
6. How would you handle authorization requirements in a custom report?
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I would identify the business operations and protected data involved, determine the relevant authorization objects, and implement appropriate authorization checks. Testing should also confirm behavior for users with different access levels.
7. What is the role of a technical specification in ABAP development?
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A technical specification translates business requirements into development details such as data sources, processing logic, validations, interfaces, output requirements, and technical dependencies. It provides a reference for implementation and testing.
8. How would you investigate a program that works correctly in development but fails in production?
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I would compare system configurations, transported objects, authorizations, available data, dependencies, and runtime logs across the environments. I would then reproduce the issue where possible and isolate the environmental or code-related difference.
9. What is the purpose of unit testing in ABAP projects?
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Unit testing verifies individual units of application logic in isolation. It helps confirm expected behavior, detect defects early, and reduce regressions when code is modified or extended.
10. How would you document an ABAP interface developed for an enterprise application?
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I would document the interface purpose, input and output structures, field mappings, authentication requirements, processing logic, error scenarios, dependencies, and monitoring approach. Clear documentation helps development and support teams maintain the integration.
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