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Define the following constraints for the table client.
(i) BAL_DUE must be at least 1000.(ii) NAME is a unique key.
(i)ALTER TABLE CLIENT ADD CONSTRAINT CLIENT_BAL_DUE_C1 CHECK(BAL_DUE < 1000); (ii) ALTER TABLE CLIENT ADD CONSTRAINT CLIENT_NAME_U UNIQUE(NAME);
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
as a customer service employee explain five measures you would recommend to make even a displeased students patronize the school canteen
Add generation capabilities and/or tailor the built-in functionality of generator. This enables you to produce "all" the test data for the MySQL tables you produced in the previous
Explain in details about the f unctions of DBA ?
i need help with creating database system for a library
Objectives After reading this unit you should be able to: Explain storage of databases on hard disks; Discuss the execution of various file Organisation techniques;
What is called an evaluation primitive? A relational algebra operation annotated with instructions on how to evaluate is known as an evaluation primitive.
Project Description: I am updating my Javascript + HTML website with five domains for the same website I would like to know if I want to create site map and submit it in all the
What are partial, alternate,, artificial, compound and natural key? Partial Key: It is a set of attributes that can uniquely recognize weak entities and that are related to s
Related fields in a database are grouped in which form? Related data fields in a database are grouped to form a data record. (A record is a collection of related fields)
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