Database Redesign How many copies of the database schema are typically used in the redesign process? Four One Three Two Four One Three Two ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Dependency graphs are diagrams that consist of nodes and arcs that show the dependencies of a database. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The EXISTS keyword will be true if any row in the subquery meets the condition. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which of the following SQL statements are helpful in database redesign? Correlated subqueries only None of these EXISTS/NOT EXISTS expressions only Both of the above are helpful Correlated subqueries only None of these EXISTS/NOT EXISTS expressions only Both of the above are helpful ANSWER DOWNLOAD EXAMIANS APP
Database Redesign A tool that can help designers understand the dependencies of database structures is a: graphical display. data model. dependency graph. None of these graphical display. data model. dependency graph. None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign How can you find rows that do not match some specified condition? EXISTS Double use of NOT EXISTS None of these NOT EXISTS EXISTS Double use of NOT EXISTS None of these NOT EXISTS ANSWER DOWNLOAD EXAMIANS APP
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