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Answer Posted / mani d
Pre-compiler replaces the source module SQL statements to
Host language(COBOL) CALL statements.DBRM will hold the
HOst language call statements.Then this will undergo for
BINDing on Compilation process.
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How is a typical db2 batch pgm executed?
ther r 2 tables OTTABLE & SALTABLE, add the otamt from OTTABLE to empsal of SALTABLE if eid is matched else add the unmatched from OTTABLE to SALTABLE
What is precompiler in db2?
What is a db2 package?
Comment whether dclgen is mandatorily used. If not, then what is the point of using it?
What is data manager?
SET is the ANSI standard for variable assignment, SELECT is not. SET can only assign one variable at a time, SELECT can make multiple assignments at once. If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign one of the values to the variable and hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one) When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from it's previous value) As far as speed differences - there are no direct differences between SET and SELECT. However SELECT's ability to make multiple assignments in one shot does give it a slight speed advantage over SET.
What is the physical storage length of timestamp data type?
What is dclgen (declaration generator)?
Give the name of some fields form sqlca.
I have a subprogram B calling from mainprogram A.I have opened a cursor in A ,Can i fetch the same cursor in subprogram B , If yes , Please explain the reason?
What is the default page size of buffer pools?
What are types of indexes?
What action db2 takes when a program aborts in the middle of a transaction?
What is an instance in db2?
