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List the string operations supported by SQL?
1) Pattern matching Operation
2) Concatenation
3) Extracting character strings
4) Converting among uppercase and lower case letters.
What are the difference between clustered and a non-clustered index? A clustered index is a special type of index that reorders the way records in the table are physically stor
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
explain ER Modeling?
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
. Ashutosh Dubey who is the director of Gyan Gurukul want a three-level schema architecture for the Gyan Gurukul Company that provide better security also design a data abstraction
What is object containment? References among objects can be used to model dissimilar real-world concepts.
Construct an ER diagram for a hospital along with a set of patients and a set of medical doctors Associate with every patient a log of the several tests and examinations conducted.
coventions for displaying an ER schema as ER diagram
What is Nested Trigger? A trigger can also having INSERT, UPDATE and DELETE logic within itself, so when the trigger is fired because of data modification it can also cause ano
explain participation constraints with examples
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