Introduction to Database System Which of the following is not a logical data-base structure? network tree chain relational network tree chain relational ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The physical location of a record is determined by a mathematical formula that transforms a file key into a record location in a tree file a sequential file None of these a hashed file an indexed file a tree file a sequential file None of these a hashed file an indexed file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An attribute that names or identifies entity instances is a(n): attribute. identifier. entity. relationship. attribute. identifier. entity. relationship. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An attribute describes the entity's characteristics. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is NOT a basic element of all versions of the E-R model? Attributes Entities Relationships Primary keys Attributes Entities Relationships Primary keys ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A multiple-form file management system allow you to entry data in all the forms both (a) and (b) lets you define different forms for different operations lets you create a look-up form with an associated read-only password to prevent access by unauthorized users None of these allow you to entry data in all the forms both (a) and (b) lets you define different forms for different operations lets you create a look-up form with an associated read-only password to prevent access by unauthorized users None of these ANSWER DOWNLOAD EXAMIANS APP
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