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Explain What is Relation?
A database relation is a predefined row or column format for storing information in a relational database. Relations are equal to tables.
what is natural join?
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Which database level is closest to the users? External database level is closest to the users.
What it creates while a primary key is combined with a foreign key? It creates Parent-Child relation ship between the tables that connect them while a primary key is combined w
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Use a Set operator to create a list of academics who have written or co-written less than 5 papers and also have greater than 3 interests. List their academic number in the output.
What is Normalization? Database normalization is a data design and organization method applied to data structures based on rules that help building relational databases. In rel
what is query processing ,query optimization and performance turring?
You are managing the following database system: • DBMS: Oracle 11g • OS: Sun Solaris • System architecture: Web-based application using ASP.Net • Purpose of Server: HR manage
growing phase and shrinking phase are disjoint, why ?
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