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Whst is logical schema ?
Logical schema is the entire database.
i need help with creating database system for a library
Design a gennalization and specialization hierarchy for an automobile sales company
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 a view? Make a view of EMP table named DEPT 20, to display the employees in department 20 and their annual salary. Ans: View is a virtual table that does not consist
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
Explain the Weak Entity Set An Entity set which does not have sufficient attribute to make a primay key is known as weak entity set. For instance, dependents of an employee in
State the Object Design for Processing The object design phase comes after analysis and system design phase. The object design phase includes implementation details like as i
The natural join is equal to which product? The natural join is equal to Combination of projection and Cartesian product
Which data manipulation command combines the records from one or more tables ? JOIN data manipulation command combines the records from one or more tables.
explain equi-join using illustration
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