When does the SQL statement gets executed when you use cursor in the application programming?

Correct Answer: - If the table structure is changed ( a field is added ), the program will have to be modified - Program might retrieve the columns which it might not use, leading on I/O over head - The chance of an index only scan is lost

Correct Answer: The number of distinct values for a column is called index cardinality DB2's RUNSTATS utility analyzes column value redundancy to determine whether to use a tablespace or index scan to search for data

Correct Answer: USING HOST VARIABLE we can pass data from COBOL to DB2

Correct Answer: A DB2 bind is a process that builds an access path to DB2 tables

Correct Answer: An application plan or package is generated by the bind to define an access path

Correct Answer: A QUIESCE flushes all DB2 buffers on to the disk This gives a correct snapshot of the database and should be used before and after any IMAGECOPY to maintain consistency

Correct Answer: The simplest DB2 index is the B-tree and the B-tree's top page is called the root page The root page entries represent the upper range limits of the index and are referenced first in a search

Correct Answer: DB2 acts as the participant and CICS acts as a co-ordinator

Correct Answer: Customer Information Control System (CICS) is an online transaction processing monitor from IBM that acts as an interface between the operating system and application programs to provide rapid high-volume online transaction processing

Correct Answer: READNEXT reads the next record from a browse operation for any of the three VSAM files