Comprehensive and Detailed Explanation From Exact Extract:

In ABAP SQL, the handling of arithmetic operations — especially division — is handled with care for data types and precision. Here’s how each applies:

B. Numeric function division(numerator, denominator, decimal places) accepts decimal inputThis is correct. The division function is designed for decimal-based calculations, where precision control is needed via the third parameter (number of decimal places). It supports packed numbers (DEC).

C. Numeric function div(numerator, denominator) expects only integer inputThis is correct. The div function is an integer division operator, returning an integer result and only accepts integers as input types.

E. Numeric function division(numerator, denominator, decimal places) accepts floating point inputThis is correct. In addition to decimals, division() can also work with floating point types (FLTP), enabling flexible division where decimals are not sufficient.

A. The division operator “/” accepts decimal inputThis is incorrect in the context of ABAP SQL. The / operator is not available as a built-in operator in Open SQL; arithmetic operations like this are not supported with native operators — only via functions.

D. The division operator “/” accepts floating point inputAgain, this is incorrect, as / is not valid syntax in ABAP SQL queries. Only built-in functions like div or division are supported in the CDS/Open SQL layer.

Comprehensive and Detailed Explanation From Exact Extract:

In ABAP, when calculating the difference between two date fields (type DATS), the result is directly a type i (integer) representing the difference in days.

Statement B is correct:

data(gv_diff_days) = gs_booking-flight_date - gs_booking-order_date.

This directly subtracts two DATS fields, resulting in an integer value for the number of days difference. No conversion is necessary.

Statements A and D are incorrect because the conv d( ... ) attempts to convert the result back to a DATS type, which is invalid since the result is an integer (number of days), not a date.

Statement C is syntactically correct but would produce the negative of the desired value (flight date - order date). It is semantically incorrect for the use case.

This approach is consistent with ABAP for Cloud Development, which requires explicit typing, and ABAP language version strict mode, where automatic type inference is restricted.

Comprehensive and Detailed Explanation From Exact Extract:

ABAP SQL (also known as Open SQL):

Is fully integrated in the ABAP language and supports embedded use with host variables, making Option B correct.

Is first processed by the ABAP Database Interface, which translates Open SQL into the database-specific native SQL. Hence, Option A is also correct.

Option C is incorrect because ABAP SQL is not directly executed on HANA or any database; it is interpreted and adapted by the ABAP layer.

Option D is incorrect because ABAP SQL is not restricted to HANA; it is database-agnostic and works across different supported DBs.

Comprehensive and Detailed Explanation From Exact Extract:

To redefine a component in a subclass:

The component (method) in the superclass must be defined with the FOR REDEFINITION addition.

In the subclass, you use the REDEFINITION clause in the method declaration and implement the method in the subclass to override the superclass behavior.

Thus:

Option A is correct because the method declaration in sub1 must include the REDEFINITION addition.

Option D is correct because the actual redefined method implementation must be provided in the subclass sub1.

Option B is incorrect because the component is not re-implemented in the superclass.

Option C is incorrect because REDEFINITION is not added in the superclass, but FOR REDEFINITION is.

Comprehensive and Detailed Explanation From Exact Extract:

In ABAP, structure component access uses the hyphen (-): structure-component. The other tokens are used for different purposes: -> for object reference attributes, => for static components, and / is not a field selector in ABAP.

ABAP Cloud stresses typed APIs and static checks, ensuring misuse of component selectors is caught early; correct structure access with - is part of the enforced style.

Comprehensive and Detailed Explanation from Exact Extract:

from_mixed converts a mixed-case string into uppercase with a chosen separator between words.

Given input 'LorelpsumFactum', the function splits at uppercase letters, uppercases the parts, and joins them with _.

Output: LORE_IPSUM_FACTUM.

condense only removes extra spaces, to_upper only changes case, and to_mixed does the reverse of from_mixed.

Study Guide Reference: ABAP Keyword Documentation – String Functions (from_mixed, to_mixed).

Comprehensive and Detailed Explanation From Exact Extract:

RAP and ABAP Cloud emphasize expression-based coding, and REDUCE is a key reduction expression. The code above defines an accumulator (h_structure_variable) and iterates over an internal table (source_itab) with FOR … IN …, so a loop over the source table is created (D). In each iteration, fields are accumulated and, when the expression finishes, the final accumulator value is returned and assigned to structure_variable. With compatible structured types, components are copied name-by-name (C).

In ABAP Cloud, the language is explicitly described as “aligned and extended to support RAP … The application developer uses typed APIs … and benefits from static code checks.” This underpins the use of typed, expression-based constructs like REDUCE for safe, declarative logic.