Introduction to Database System Which of the following is NOT a basic element of all versions of the E-R model? Entities Primary keys Relationships Attributes Entities Primary keys Relationships Attributes ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System One solution to the multivalued dependency constraint problem is to: add a composite key. create a new theme. split the relation into two relations, each with a single theme. change the theme. add a composite key. create a new theme. split the relation into two relations, each with a single theme. change the theme. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In which of the following is a single-entity instance of one type of related to a single-entity instance of another type? One-to-One Relationship Composite Relationship Many-to-Many Relationship One-to-Many Relationship One-to-One Relationship Composite Relationship Many-to-Many Relationship One-to-Many Relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An operation that will increase the length of a list is Modify All of the listed here Look-up Insert Modify All of the listed here Look-up Insert ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: identifies a column. identifies a row. can only be one column. must always be composed of two or more columns. identifies a column. identifies a row. can only be one column. must always be composed of two or more columns. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A recursive relationship is a relationship between an archetype and an instance of that archetype. True False True False ANSWER DOWNLOAD EXAMIANS APP
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