Introduction to Database System Which command(s) is(are) used to redefine a column of the table in SQL ? all of the listed here DEFINE TABLE ALTER TABLE MODIFY TABLE all of the listed here DEFINE TABLE ALTER TABLE MODIFY TABLE ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation is a two-dimensional table. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not the responsibility of the utilities component of DBMS software? creating the physical and logical designs None of these creating and maintaining the data dictionary monitoring performance removing flagged records for deletion creating the physical and logical designs None of these creating and maintaining the data dictionary monitoring performance removing flagged records for deletion ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In the relational model, relationships between relations or tables are created by using: candidate keys. determinants. composite keys. foreign keys. candidate keys. determinants. composite keys. foreign keys. 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? ID- independent entity Weak entity Strong entity ID-dependent entity ID- independent entity Weak entity Strong entity ID-dependent entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation is in this form if it is in BCNF and has no multivalued dependencies: fourth normal form. third normal form. second normal form. domain/key normal form. fourth normal form. third normal form. second normal form. domain/key normal form. ANSWER DOWNLOAD EXAMIANS APP
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