Database Redesign A tool that can help designers understand the dependencies of database structures is a: data model. dependency graph. graphical display. None of these data model. dependency graph. graphical display. None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Dependency graphs are diagrams that consist of nodes and arcs that show the dependencies of a database. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The NOT EXISTS keyword will be true if any row in the subquery meets the condition. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0? ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0); ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0); None of these ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0); ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0); ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0); None of these ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0); ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Adding null columns to a table is straightforward. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Database redesign is especially difficult if the database has no data. False True False True ANSWER DOWNLOAD EXAMIANS APP
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