DB2 Interview Questions and Answers
DB2 is the database management system that delivers a flexible and cost-effective database platform to build robust on demand business applications. DB2 further leverages your resources with broad support for open standards and popular development platforms like J2EE and Microsoft .NET. The DB2 family also includes solutions tailored for specific needs like business intelligence and advanced tooling. Whether your business is large or small, DB2 has a solution built and priced to meet your unique needs.
DB2 Interviews are getting tough these days as the technology grows faster. To get through the DB2 interview one needs to update him/herself in a regular manner. Having said that, just before the interview, it is very important to have a quick glance of the reputed DB2 questions and answers to make yourself comfortable during the interview process. This is where DoAnswers.com helps you in renewing yourself on DB2 and various other technologies interview preparation.
31. How do you pull up a query which was previously saved in QMF ?
Looks like index page split has occurred. DO a REORG of the indexes.
32. How do you pull up a query which was previously saved in QMF ? ?
??
33. How do you retrieve the data from a nullable column?
Use null indicators. Syntax ? INTO :HOSTVAR:NULLIND
34. How do you retrieve the data from a nullable column? ?
Use null indicators. Syntax ... INTO :HOSTVAR:NULLIND
35. How do you retrieve the first 5 characters of FIRSTNAME column of DB2 table EMP ?
SQL Query : SELECT SUBSTR(FIRSTNAME,1,5) FROM EMP;
36. How do you select a row using indexes in DB2?
Specify the indexed columns in the WHERE clause of db2 query.
37. How do you simulate the EXPLAIN of an embedded SQL statement in SPUFI/QMF? Give an example with a host variable in WHERE clause.)
Use a question mark in place of a host variable ( or an unknown value ). e.g. SELECT EMP_NAME FROM EMP WHERE EMP_SALARY > ?
38. How do you specify and use a cursor in a COBOL program?
Use DECLARE CURSOR statement either in working storage or in procedure division(before open cursor), to specify the SELECT statement. Then use OPEN, FETCH rows in a loop and finally CLOSE.
39. How do you specify and use a cursor in a COBOL program? ?
Use DECLARE CURSOR statement either in working storage or in procedure division(before open cursor), to specify the SELECT statement. Then use OPEN, FETCH rows in a loop and finally CLOSE.
40. How does DB2 determine what lock-size to use?
1. Based on the lock-size given while creating the tablespace 2. Programmer can direct the DB2 what lock-size to use 3. If lock-size ANY is specified, DB2 usually chooses a lock-size of PAGE
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