How COBOL FLAT files(Index,Sequential) are very secure for huge data?If not, How will you migrate with any Database with Frond end COBOL?

Question: How COBOL FLAT files(Index,Sequential) are very secure for huge data?If not, How will you migrate with any Database with Frond end COBOL?


Answer:


Well if you are using flat file you have advantage as well as disadvantages.
Advantage-It is Secure Physically edited.
Disadvantage - Logically speaking performance is slow difficult to find the particular record.

What is difference between Object oriented COBOL & MicroFocus COBOL?

Question :What is difference between Object oriented COBOL & MicroFocus COBOL?


Answers :
There is only one thing we can use Java or C++ in Mainframe instead of CICS

How will work GOBACK statement & STOP RUN & EXIT-PROGRAM in COBOL ?

Question :How will work GOBACK statement & STOP RUN & EXIT-PROGRAM in COBOL ?


Answers :


goback 
- When specified in main program, will act like stop run. i.e give control back too O.S
- When specified in sub-program, will give control back to main program

Exit-program
- When specified in main program, will throw abend4038 (compilation) error, since it wont give the control back to the O.S
- When specified in sub-program, will give control back to main program

stop run 
- Will stop the current program and give control back to O.S (even in sub-program)


Answer2:


GOBACK gives the controll to main program if we have called the subprogram from the main program.

STOP RUN: This statement halts the execution of the object program and returns control to the system.

EXIT-PROGRAM: This statement specifies the end of a called program and returns control to the calling program.