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how to construct labelled precedence graph for view serialiability.please explain insteps with one solved examples
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
what is entity in database system?
Write A short note on temporary tables? Temporary Tables - Temporary tables exists solely for a particular session, or whose data persists for the duration of the transaction
what is query processing ,query optimization and performance turring?
Explain the difference between using functions along with and without grouping attributes in relational algebra. Give examples. Ans: Group functions are used to group data of
We have a new website where I need someone to 1: Inhabit the back end with all the recruitment agencies in the UK. I require someone who is not manually going to do this, but who w
What is a foreign key, and what is it used for? A foreign key is used to establish relationships between relations in the relational model. Technically, a foreign key is a colu
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