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Whst is logical schema ?
Logical schema is the entire database.
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
What are the different kinds of database end users? Discuss the major activities of each? End-Users - End-users are the people whose jobs need access to the database for que
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
Create student database and retrieve course name taught by king? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (secti
Step 1 . Using Oracle, create the tables identified in the preferred solution for Assignment 2. Technicians (ZipCode, TechnicianID, FirstName, LastName, Street, City, State, Home
Type of views : Simple views and Difficult Views Feature Simple Views Complex Views Number of tables One
What are stored-procedures? And what are the advantages of using them? Stored procedures are database objects that perform a user defined operation. A stored procedure can have
What is a SELECT operation? The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
Explain the θ-join and equijoin Refer tables Car and Boat which list models of cars and boats and their relevant prices. Assume a customer wants to buy a car and a boat, but sh
what is cascading? what is rollback cascading? please explain in detail
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