A key is a set of data base which is designed to recognize rows and columns of the data base table. It is helpful in recognizing the relation between...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our expert...
Some examples of the use of DBMS_XPLAN to display PLAN_TABLE output are: SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY()); SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY('MY_PLAN_TABLE', 'st1','TYPICAL')); See Also: Oracle Database PL/SQL Packages and Types Reference...
Give an example of each. What are the advantages and disadvantages of a relational database? Explain the importance of determining relationships before establishing primary keys in the design sequence. What do you see as the primary advantage of using b...
A method for selectively preparing customized reports of query explain data comprises selectively retrieving from the database subsets of the query explain data for the at least one query statement; f
The SQL uses some operators to throw queries like SELECT uses to selects a data value and shown on the output screen, Where uses for conditions, Group by uses to group the output, Joins uses to join the two or more tables with the ...
Foreign Keys:A database table must have a primary key and may also have foreign keys. When a database is normalized the data will appear only once in one table and will not be duplicated in another table.Answer and Explanation: Become a member a...
Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough homework and study questions. Ask a question Search AnswersLearn more about this topic: Data Definition &...