Introduction to Database System Two files may be joined into a third file if they have a field in common they have a row in common they have no records with the same value in the common field None of these both (b) and (c) they have a field in common they have a row in common they have no records with the same value in the common field None of these both (b) and (c) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A ____ Contains the smallest unit of meaningful data, so you might call it the basic building block for a data file. Fields Database File structure Records Fields Database File structure Records ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A scheme describes All of these None of these record relationships data elements records and files All of these None of these record relationships data elements records and files ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which two files are used during operation of the DBMS? query language and utilities data dictionary and transaction log data dictionary and query language None of the listed here query language and utilities data dictionary and transaction log data dictionary and query language None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System For some relations, changing the data can have undesirable consequences called: modification anomalies. normal forms. transitive dependencies. referential integrity constraints. modification anomalies. normal forms. transitive dependencies. referential integrity constraints. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System To have a file hold a list, it is necessary to identify the name, width and type of the fields of each record. All of the listed here identify the records in the list decide which fields will be used as sort or index keys identify the name, width and type of the fields of each record. All of the listed here identify the records in the list decide which fields will be used as sort or index keys ANSWER DOWNLOAD EXAMIANS APP
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