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.
Illustrate the five SQL built-in functions.
Explain the term operational data stage (ODS) and data warehouse?
What demerits of ODBC does OLE DB overcome?
State difference between Passive and Active transformation?
Describe the difference between SQL Server 2000 clustered indexes and non clustered indexes?
What do you understand by the term deadlock in DBMS? How can it be avoided? How can it be solved once it happens?
What are sequences, and what are the possible problems when employing them to make surrogate keys?
What is the archtetype or instance pattern?
Describe why XML is a better markup language than HTML?
State the different types of the folders?
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