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DB2 Interview Question and Answers | Top 10 Db2 interview questions and answers | DB2 Introduction.
FAQ
How does Db2 store null physically?
DB2 physically stores the NULL value by adding an extra byte in prefix to the column value.
What is 2 in Db2?
The “2” in Database 2 refers to IBM’s second family of database management software, which shifted from a hierarchical to a relational database model. [1, 2]. Originally used exclusively for IBM’s platforms, Db2 was made available for most operating systems, including Windows, Linux, and more [2].
What is the maximum size of the varchar data type in Db2?
IBM® DB2® implements the following character data types: CHAR(N) with N<= 254 bytes. VARCHAR(N) with N <= 32672 bytes. GRAPHIC(N) with N <= 127 characters.
What is the physical storage length of time data type in Db2?
What is the physical storage length of each of the data types, DATE, TIME, and TIMESTAMP? The physical storage length of DATE is 4 bytes, TIME is 3 bytes, and TIMESTAMP is 10 bytes.
