Introduction to Database System The relational model uses some unfamiliar terminology. A tuple is equivalent to a field record data base data item field record data base data item ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System After you _____ a record, many data management the environments require you to issue a command to save the changes you made. Update Index Delete Sort key Update Index Delete Sort key ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity? Weak entity Strong entity ID-dependent entity ID-independent entity Weak entity Strong entity ID-dependent entity ID-independent entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If a piece of data is stored in two places in the database, then storage space is wasted None of these it can be more easily accessed both (a) and (b) changing the data is one spot will cause data inconsistency storage space is wasted None of these it can be more easily accessed both (a) and (b) changing the data is one spot will cause data inconsistency ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A subtype entity is a special case of another entity called a supertype entity. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An entity is something that can be identified in the user's work environment; something that the users want to track. True False True False ANSWER DOWNLOAD EXAMIANS APP
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