Describes the examples of EXPLAIN in valid teradata database
Describes the examples of EXPLAIN in valid teradata database.
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The given is an example of it:-• EXPLAIN choose last_name,first_name FROM workers;• The EXPLAIN parses the SQL statement other than does not execute this.• It provides the designer along with an "execution stratergy".• The execution strategy gives what an optimizer does but not why this chooses them.• The EXPLAIN feature is used to analyze all complex and joins queries.
Illustrates the implementation of business logic within stored procedures?
Describe briefly the different methods of loading Dimension tables?
Explain the term operational data stage (ODS) and data warehouse?
Why do normalized tables need more complex SQL when SQL statements are employed in application programs?
Explain terms Procedure Cache in Sybase. Answer: It is the memory area where compiled query tree run for example: procedure and batch query.
Briefly describe the foreign key columns in dimension table and fact table?
You have been given a setup of tables with data and inquired to make a new database to store them. What are you looking for, when you observe the data values in the tables?
Briefly describe the term ‘BOMain.Key’?
Explain about the DBMS.
Specify the types of prompt in the Cognos?
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