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Restrict Writes where Name = Dorothy King giving Results8
Chapter 5, Problem 8(choose chapter or problem)
For Exercises 7–16, use the following relation tables and write the results of the operations. These tables are sorted by primary key (or in the case of the Writes table, by the first component of the primary key), which is not required but is useful for Exercise 25. Many database systems maintain data in sorted order by primary key using a tree structure (see Section 5.1, Exercise 43).
Restrict Writes where Name = “Dorothy King” giving Results8
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QUESTION:
For Exercises 7–16, use the following relation tables and write the results of the operations. These tables are sorted by primary key (or in the case of the Writes table, by the first component of the primary key), which is not required but is useful for Exercise 25. Many database systems maintain data in sorted order by primary key using a tree structure (see Section 5.1, Exercise 43).
Restrict Writes where Name = “Dorothy King” giving Results8
ANSWER:Step 1 of 2
The relations are used to store the structured data in the form of tables. Each row of the table corresponds to a particular instance of the data. The columns represent the attributes of the data. The two operations restrict and the project can be performed on the relations. The restrict operation creates a new relation containing certain tuples of the original relation which satisfy the required conditions.
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