Introduction to Database System The main idea behind computer files is that it is convenient to store information together arrange them access them create them store information together arrange them access them create them ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a large DBMS each subschema contains every field in the logical schema all of the listed here each user can "see" only a small part of the entire database each user can access every sub¬schema each subschema contains every field in the logical schema all of the listed here each user can "see" only a small part of the entire database each user can access every sub¬schema ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation is in this form if it is in BCNF and has no multivalued dependencies: second normal form. domain/key normal form. third normal form. fourth normal form. second normal form. domain/key normal form. third normal form. fourth normal form. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Given the functional dependency R → S , R is called the determinant. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An audit trail can be used to restore lost information is used to make back-up copies All of the listed here is the recorded history of operations performed on a file can be used to restore lost information is used to make back-up copies All of the listed here is the recorded history of operations performed on a file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In the relational model, relationships between relations or tables are created by using: candidate keys. foreign keys. composite keys. determinants. candidate keys. foreign keys. composite keys. determinants. ANSWER DOWNLOAD EXAMIANS APP
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