Data Models into Database Designs Each entity is represented as a(n): table. attribute. tuple. file. table. attribute. tuple. file. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Surrogate keys have much meaning for users. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs If a relationship has a cascade updates constraint, then if ________ in the parent table is changed, then the same change will automatically be made to any corresponding foreign key value. a surrogate key a foreign key any alternate key the primary key a surrogate key a foreign key any alternate key the primary key ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs When the parent entity is required, cascading updates and cascading deletions should be allowed or the associated actions on the parent should be prohibited. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which of the following columns is(are) are required in a table? A foreign key A primary key A surrogate key An alternate key A foreign key A primary key A surrogate key An alternate key ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs An ideal primary key is short, numeric and seldom changing. True False True False ANSWER DOWNLOAD EXAMIANS APP
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