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Describe substring comparison in SQL. For the relation Person (name, address), write a SQL query that retrieves the names of people whose name starts along with ‘A' and address contains ‘Bangalore'?
SUBSTR is used to extract a set of characters from a string through specifying the character beginning position and end position and length of characters to be fetched.
example substr('hello',2,3) will return 'ell' Select name from Person where name like ‘A%' and address = ‘Bangalore'
why are older data models are being replaced by new data models
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Describe integrity and security? a) Domain constraint b) Referential integrity A value that appears in one relation for a given set of attributes also appear fo
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
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