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Define weak and strong entity sets?
Weak entity set: entity set that do not have key attribute of their own are known as weak entity sets.
Strong entity set: Entity set that has a primary key is term a strong entity set.
List the drawbacks of relational database system A) Repetition of data B) Inability to s certain information.
Write short notes on domain relational calculus The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole t
can you create a database for me in oracle/sql
WHAT IS DATABASE TECHNOLOGIES
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