You are developing a COBOL program that needs to calculate the square root of a given number. Which COBOL intrinsic function would you use for this purpose?
- ABS
- EXP
- LOG
- SQRT
The SQRT intrinsic function in COBOL is used to calculate the square root of a given number. It is suitable for scenarios where you need to perform mathematical operations involving square roots.
In COBOL, what type of file organization is suitable for random access to records?
- Indexed file organization
- Line sequential file organization
- Relative file organization
- Sequential file organization
Indexed file organization in COBOL is suitable for random access to records. It employs an index file that contains pointers to the actual records, enabling direct access based on the indexed key.
What is the primary objective of multi-user considerations when working with COBOL file handling?
- To ensure data consistency and integrity in a shared environment
- To minimize the execution time of COBOL programs
- To prioritize access based on user seniority
- To reduce the storage space required for files
The primary objective of multi-user considerations in COBOL file handling is to ensure data consistency and integrity in a shared environment. Proper mechanisms, such as file locking, are employed to manage concurrent access and prevent conflicts.
The _____ file organization in COBOL is used for storing records in the order they are written.
- Indexed
- Random
- Relative
- Sequential
In COBOL, a Sequential file organization is used to store records in the order they are written. This means that records are stored one after another, and the order of records is maintained based on their physical placement in the file.
How do you declare a global variable in COBOL?
- By declaring the variable in the FILE SECTION
- By placing the variable in the WORKING-STORAGE section
- By using the GLOBAL keyword in the VARIABLE clause
- COBOL does not support global variables
In COBOL, global variables are declared in the WORKING-STORAGE section. This makes the variable accessible to all procedures within the program, ensuring a global scope.
What is the difference between a figurative constant and a user-defined constant in COBOL?
- Figurative constants are declared using the CONSTANT keyword, while user-defined constants use the VALUE clause
- Figurative constants are numeric, and user-defined constants are alphanumeric
- Figurative constants represent predefined values like ZERO and SPACE, while user-defined constants are explicitly defined by the programmer using the VALUE clause
- There is no difference between figurative and user-defined constants in COBOL
Figurative constants in COBOL represent predefined values like ZERO, SPACE, etc. User-defined constants are explicitly defined by the programmer using the VALUE clause in the DATA DIVISION.
In your COBOL program, you need to handle the situation where a file record exceeds the defined maximum length. How would you approach this exception?
- Implement error handling using the FILE STATUS clause
- Increase the MAXIMUM RECORD SIZE in the file's FD entry
- Use the INVALID KEY clause in the file control entry
- Utilize the ON SIZE ERROR clause in the FILE SECTION
Handling file record length exceptions can be done by utilizing the ON SIZE ERROR clause in the FILE SECTION. This clause allows you to specify actions to be taken if a record size exceeds the defined maximum length.
What is the role of the RETURN statement in the COBOL Procedure Division?
- It is used to define a return value for a function
- It is used to exit a paragraph or section and return control to the calling program
- It is used to return a value from a called subroutine
- It is used to terminate the entire COBOL program
The RETURN statement in COBOL is used to exit a paragraph or section, returning control to the calling program. It is essential for managing program flow and ensuring proper execution.
________ is a technique used in COBOL to ensure data integrity during exceptional situations.
- Checkpoint
- Recovery
- Restart
- Rollback
Recovery is a technique used in COBOL to ensure data integrity during exceptional situations. It involves actions such as rollback, checkpoint, or restart to bring the system back to a consistent state after an exception.
When using the REDEFINES clause in COBOL, what happens to the memory occupied by the redefined data items?
- It is deallocated
- It is marked as read-only
- It is reallocated with a new address
- It is shared with the original data item
When the REDEFINES clause is used in COBOL, the memory occupied by the redefined data items is shared with the memory of the original data item. This means both the original and redefined data items refer to the same memory location, enabling different ways to interpret the stored data.