Data Models into Database Designs A primary key should be defined as: NOT NULL. Either of the above can be used. None of these NULL. NOT NULL. Either of the above can be used. None of these NULL. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs An intersection table is required to represent M:N relationships. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which of the following situation requires the use of ID-dependent entities? Archetype/instance relationships only All of these Multivalued attributes only Association relationships only Archetype/instance relationships only All of these Multivalued attributes only Association relationships only ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which of the following column properties specifies whether or not cells in a column must contain a data value? Null status Data type Default value Data constraints Null status Data type Default value Data constraints ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs The DBMS allows surrogate keys to be changed. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which is not true about surrogate keys? They are short. They have meaning to the user. They are fixed. They are numeric. They are short. They have meaning to the user. They are fixed. They are numeric. ANSWER DOWNLOAD EXAMIANS APP
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