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What is candidate key?
Candidate Key - A candidate key of an entity set is a minimal superkey, which uniquely identifies each row in the relation.
What is nested relational model? The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.
I need web security expert , website management Project Description: i want professional for the below . website management server management database management
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
Explain the relevance of Data Dictionary in a Database System? Data dictionary is a database in its own right residing on the disk that consist of Meta data which is = Data abo
Question 1 Explain the 10 reasons to use MySQL Question 2 Write the SQL statements to demonstrate the following using SELECT command Expression Evaluation ORDER BY
Difference between LEFT OUTER JOIN and RIGHT OUTER JOIN In left outer join tuples from the left-hand-side relation which do not match any tuple in the right-hand-side relation
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
Example : Search the name, department number and salary of employees drawing minimum salary in that department. SELECT ENAME, SAL, DEPTNO FROM EMP WHERE SAL IN (SELECT MI
Explain retrieval in QBE? Retrieval in QBE : A "GUI" for expressing queries. Based on the Domain Relational Calculus (DRC) Actually invented before GUIs. Very co
i am not clear with the climetic condition of the north indian plain. can u plz explain it for me
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