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Mention the type of constraints we can specify in the CREATE command of DDL.
The type of constraints that can be specified are as follows:-
PRIMARY KEY, NOT NULL, UNIQUE, FOREIGN KEY, CHECK.
I have a small project that contains 3 deliverable s. I have done the first one and I would like you to help me with second one
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
What is a query tree? Ans: A query tree, as well known as operator graph, is a tree data structure that corresponds to a relational algebra expression. It denotes the inpu
Why do so various organizations use MySQL? Advantages: Open source Highly efficient Offers a high scalability in terms of size and connectivity. Highly prote
Which is a valid SQL type? A valid SQL Should be in CHARACTER it is should be NUMERIC and FLOAT.
What does authentication refer? Authentication refers to the task of verifying the uniqueness of a person.
explain thee diffrent types of data models
Describe the algorithm for updating indices for a single level index when a record is (i) Inserted (ii) deleted What will be the modification if there are multilevel in
what is the importance of back up files
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