Introduction to Database System A _____ means that one record in a particular record type may be related to more than one record of another record type. One-to-one relationship Many-to many relationship One-to-many relationship Many-to-one relationship One-to-one relationship Many-to many relationship One-to-many relationship Many-to-one relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If a piece of data is stored in two places in the database, then both (a) and (b) changing the data is one spot will cause data inconsistency storage space is wasted None of these it can be more easily accessed both (a) and (b) changing the data is one spot will cause data inconsistency storage space is wasted None of these it can be more easily accessed ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An attribute that names or identifies entity instances is a(n): relationship. attribute. entity. identifier. relationship. attribute. entity. identifier. 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? Relationships Attributes Primary keys Entities Relationships Attributes Primary keys Entities ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following indicates the maximum number of entities that can be involved in a relationship? ERD Minimum cardinality Maximum cardinality Greater Entity Count (GEC) ERD Minimum cardinality Maximum cardinality Greater Entity Count (GEC) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier? Weak entity Strong entity ID- independent entity ID-dependent entity Weak entity Strong entity ID- independent entity ID-dependent entity ANSWER DOWNLOAD EXAMIANS APP
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