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What is object identity? An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
2NF Normal Form : A relation schema process R is in 2NF if it is in 1NF and each non-prime attribute A in R is fully functionally related on primary key. Second normal form (2N
i am not clear with the climetic condition of the north indian plain. can u plz explain it for me
Differentiate between a subquery and a join If we need to acquire information from one or more tables after that either subquery or join can be used. If the columns which are t
a method named WonGame that checks each letter in the word is matched by its label
Difference between SQL and SQL*Plus SQL SQL*Plus SQL is a language SQL *Plus is an environment It is bas
Which data manipulation command combines the records from one or more tables ? JOIN data manipulation command combines the records from one or more tables.
Consider the relation PERSON. If you want to display details of persons having age less than or equal to 30 than the select operation will be used as follows: σ AGE The resu
(A) For the relation; CarSales (RegNo, BuyerName, Address, SalesPerson, Make, Model, Commission) The following functional dependences hold, RegNo _ID à Make, Model Reg
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