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Let us now make the E-R diagram for the student database as per the explanation given in the previous section.
We can also states the overall logical structure of a database using ER model graphically with the help of an E-R diagram.
ER diagrams are composed of:
Figure: ER diagram of COLLEGE database
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
average response time?
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
A B-tree of order how much children m has maximum ? m has maximum m mchildren in a B tree.
List and explain the memory constructs of the Oracle 12c databases?
Explain the Concept of Two-phase Locking It concerns the positions of locking and unlocking operations in each transaction. In this protocol every transaction issue lock and u
What are composite attributes? Composite attributes can be separated in to sub parts.
What is Nested Queries explain in details? Nested Queries - A SELECT query could have subquery(s) in it. While a SELECT query having another SELECT query in it, is known as n
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