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Here which one denotes the relation for which index is created?

StudentID_index

StudentID

Student

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All aggregate functions except _____ ignore null values in their input collection.

Count

Avg

Sum

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In contemporary databases, the top level of the hierarchy consists of ______ each of which can contain _____

Catalogs, schemas

Schemas, catalogs

Environment, schemas

Schemas, Environment

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What are the different in triggers?

Define, Create

Drop, Comment

Insert, Update, Delete

All of the mentioned

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Which of the following is used to store movie and image files?

Clob

Blob

Binary

Image

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Why does this statement cause an error when QUANTITY values are null?

The expression attempts to divide by a null value

The data types in the conversion function are incompatible

The character string none should be enclosed in single quotes

A null value used in an expression cannot be converted to an actual value

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category More Database Management System Topics

Miscellaneous or General

Relational Algebra

Database Systems

Data Models

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

Database Administration

Mixed

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