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Define NULL value
NULL value NULL means something is unknown. It does NOT mean null (the digit 0). Null is as well employed as attribute value for a particular entity in which attribute is not applicable for example name of child for unmarried.
Explain the concept of QBE? Query-by-example represents a visual/graphical approach for accessing information in a database by the use of query templates called as skeleton tab
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
Normal 0 false false false EN-US X-NONE X-NONE
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
what is multivalued dependency
growing phase and shrinking phase are disjoint, why ?
define attribute inheritance with example?
List the data structures implemented by the storage manager. The storage manager executes the following data structure a) Data files b) Data dictionary c) indices
Name the three major set of files on disk that compose a database in Oracle. There are three main sets of files on disk that compose a database. All the files are binary. These
How to define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a
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