Introduction to Database System The distinguishable parts of a record are called None of these files database data fields None of these files database data fields ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Two files may be joined into a third file if they have a row in common they have a field in common None of these both (b) and (c) they have no records with the same value in the common field they have a row in common they have a field in common None of these both (b) and (c) they have no records with the same value in the common field ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A _____ means that one record in a particular record type may be related to more than one record of another record type. One-to-many relationship Many-to-one relationship One-to-one relationship Many-to many relationship One-to-many relationship Many-to-one relationship One-to-one relationship Many-to many relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which command(s) is(are) used to enable/disable/drop an integrity constraint in SQL? DEFINE TABLE All of the listed here MODIFY TABLE ALTER TABLE DEFINE TABLE All of the listed here MODIFY TABLE ALTER TABLE ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The activity of a file refers to how closely the files fits into the allocated None of these is a measure of the percentage of existing records updated during a run if high, reduces processing efficiency for sequential and nonsequential files is a low percentages of number of records added or deleted from a file refers to how closely the files fits into the allocated None of these is a measure of the percentage of existing records updated during a run if high, reduces processing efficiency for sequential and nonsequential files is a low percentages of number of records added or deleted from a file ANSWER DOWNLOAD EXAMIANS APP
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