Introduction to Database System A primary key is a composite key that was selected to be the main identifier for the relation. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to add a column/integrity constraint to a table ADD COLUMN ALTER TABLE INSERT COLUMN MODIFY TABLE ADD COLUMN ALTER TABLE INSERT COLUMN MODIFY TABLE ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The way a particular application views the data from the data base that the application uses is a : None of these relational model subschema module schema None of these relational model subschema module schema ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relation, the rows are sometimes called "fields". True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is true of a network structure? It will be the dominant data base of the future It is conceptually simple It is a physical representation of the data It allows a many-to-many relationship It will be the dominant data base of the future It is conceptually simple It is a physical representation of the data It allows a many-to-many relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation in this form is free of all modification anomalies. First normal form Third normal form Domain/key normal form Second normal form First normal form Third normal form Domain/key normal form Second normal form ANSWER DOWNLOAD EXAMIANS APP
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