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The predicate in a where clause can involve Boolean operations such as and. The result of true and unknown is_______ false and unknown is _____ while unknown and unknown is _____

Unknown, unknown, false

True, false, unknown

True, unknown, unknown

Unknown, false, unknown

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_________ is a virtual table that draws its data from the result of an SQL SELECT statement.

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Synonym

Sequence

TrAnsaction

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A ________ on an attribute of a relation is a data structure that allows the database system to find those tuples in the relation that have a specified value for that attribute efficiently, without scanning through all the tuples of the relation.

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Reference

Assertion

Timestamp

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Which of the following header must be included in java program to establish database connectivity using JDBC ?

Import java.sql.

Import java.sql.odbc.jdbc.

Import java.jdbc.

Import java.sql.jdbc.

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Which of the following statements creates a new table temp instructor that has the same schema as an instructor.

create table temp_instructor

Create table temp_instructor like instructor

Create Table as temp_instructor

Create table like temp_instructor

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category More Database Management System Topics

Miscellaneous or General

Relational Algebra

Database Systems

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The Relational Database Model

Entity Relationship (ER) Modeling

Advanced Data Modeling

Normalization

Structured Query Language (SQL)

Advanced SQL

Database Design

Transaction and Concurrency

Data Warehouses

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