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how map binary relation one to one
what is attribute is attribute inheritance in dbms?
Ancestry database records information about family trees . Following information is recorded about each person: FIRSTNAME first name SURNAME surname MNAME maiden name (if
The natural join is equal to which product? The natural join is equal to Combination of projection and Cartesian product
Chapter 10a review questions
What is called an evaluation primitive? A relational algebra operation annotated with instructions on how to evaluate is known as an evaluation primitive.
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
The First Normal Form (1NF) Let us first describe 1NF: Definition: A relation (table) is in 1NF if 1. There are no duplicate tuples or rows in the relation. 2.
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
recovey techniques based on deferred update and immediate update
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