Introduction to Database System Which of the following indicates the minimum number of entities that must be involved in a relationship? Maximum cardinality Minimum cardinality Greater Entity Count (GEC) ERD Maximum cardinality Minimum cardinality Greater Entity Count (GEC) ERD ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which command(s) is(are) used to redefine a column of the table in SQL ? ALTER TABLE DEFINE TABLE MODIFY TABLE all of the listed here ALTER TABLE DEFINE TABLE MODIFY TABLE all of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Entity instances are associated by relationship classes. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator? Supertype entity Archetype entity Instance entity Subtype entity Supertype entity Archetype entity Instance entity Subtype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System To have a file hold a list, it is necessary to identify the name, width and type of the fields of each record. All of the listed here decide which fields will be used as sort or index keys identify the records in the list identify the name, width and type of the fields of each record. All of the listed here decide which fields will be used as sort or index keys identify the records in the list ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In the relational model, relationships between relations or tables are created by using: composite keys. foreign keys. determinants. candidate keys. composite keys. foreign keys. determinants. candidate keys. ANSWER DOWNLOAD EXAMIANS APP
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