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True/False Questions for Introduction to Databases
In file base system, there is no provision for concurrency, security and recovery of data.
DML stands for Data meanning language.
Database systems give a set of tools for storing, searching and managing this information
Data mining is search for trends in large amounts of data
In a database, data is stored in spreadsheets which have rows and columns.
The purpose of a database is to help people keep track of things
Application developers write the client software that allows end users to interface with the DBMS .
The purpose of database is to help people stop using spreadsheets.
DML permits specification of data types, structures and any data constraints.
Today, database system vendors like Oracle are among the largest software companies in the world
Conventional file-processing environments do not allow needed data to be retrieved in a convenient and efficient manner.
File based systems support concurrency, security and recovery.
In file based systems there is no easy way to generate complex queries.
File based systems cannot follow standards for saving data.
Data duplication is a problem in file based systems.
Database comprises entities, attributes, and relationships of an organization's information
Metadata describing context that includes source of data, where data are stored ownership and usage
Data that describe the properties or characteristics of end-user data, and the context of that data is called information.
Data that have been processed in such a way that the knowledge of the person who uses the data is increased is called metadata.
In database systems the disk storage refers to the amount of disk space required to store the database files.
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