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Given the following set of functional dependencies {cf?bg, g?d, cdg?f, b?de, d?c} defined on R(b,c,d,e,f,g) a.Find a non-redundant cover. b.Find a canonical cover.
Consider the relations EMP(ENO,ENAME,AGE,BASIC_SALARY) WORK_IN(ENO,DNO) DEPT(DNO,DNAME,CITY) Express the following queries in SQL (i) Find names of employees who work in a dep
What is the difference between link and reference? The fundamental difference between links and references is that links are symmetrical on the other hand references refer only
SELECT Statement This statement is used for retrieving information from the databases. It can be coupled with many clauses. Let us talk about these clauses in more detail:
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
write on the various type of relationalkey
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
Which database object does not physically exist? A view database object does not physically exist.
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
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
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