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List the string operations supported by SQL?
1) Pattern matching Operation
2) Concatenation
3) Extracting character strings
4) Converting among uppercase and lower case letters.
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
Views A view is like a window by which data from tables can be changed or viewed. The table on which a view is based is known as Base table. The view is stored as a SELECT stat
Data Manipulation Language Data manipulation language (DML) describes a set of commands that are used to query and change data within existing schema objects. In this case comm
deffine class&object
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
Describe disk manager and their work? Disk Manager: Responsible for fetching data regulated through file Manager from disk storage within Main memory and deciding what data to
What are the various symbols used to draw an E-R diagram (any 3)?
Write a query that display ename annual salary and comm from emp table
Haw does it work one database application
it can be possible to create any table without primary key
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