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Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
Type of database technology
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 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
What is meant by functional dependencies? Consider a relation schema R and α C R and β C R. The functional dependency α ->β holds on relational schema R if in any legal relati
What's the difference between a primary key and a unique key? Both primary key and unique key enforces uniqueness of the column on which they are explained. But by default prim
Draw an ER diagram for company''s database schema
I need help with data warehousing and business intelligence course project about designing a data warehouse for a jewelry company that does not have one
to develop elrctronic database from manual forms
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