Answer / nithya

Decode
1.It’s a function
2.can compare only discrete values
3.pl/sql standards
4.cannot process null

Case
1.It's an Expression
2.can handle range values
3.ANSI Standards
4.Processing time is faster when compared to Decode
5.can process null

Answer / dev

Decode is widely used

What are defaults? Is there a column to which a default can't be bound?

2 Answers  

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What is DB Development software?

0 Answers  

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1. Using the XML Document below, with the URI “recipe.xml” define the following queries in XQuery: a.) Give the names of all breakfast in the menu. b.) Select breakfasts that have price lower than $7.00? <?xml version="1.0"?> <breakfast_menu> <food> <name>Belgian Waffles</name> <price>$5.95</price> <description> two of our famous Belgian Waffles with plenty of real maple syrup </description> <calories>650</calories> </food> <food> <name>Strawberry Belgian Waffles</name> <price>$7.95</price> <description> light Belgian waffles covered with strawberries and whipped cream </description> <calories>900</calories> </food> <food> <name>Berry-Berry Belgian Waffles</name> <price>$8.95</price> <description> light Belgian waffles covered with an assortment of fresh berries and whipped cream </description> <calories>900</calories> </food> <food> <name>French Toast</name> <price>$4.50</price> <description> thick slices made from our homemade sourdough bread </description> <calories>600</calories> </food> <food> <name>Homestyle Breakfast</name> <price>$6.95</price> <description> two eggs, bacon or sausage, toast, and our ever-popular hash browns </description> <calories>950</calories> </food> </breakfast_menu>

0 Answers  

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How to read and create .LDC data files which are used by linguatic dictionary.

0 Answers  

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Define candidate key, alternate key, composite key?

30 Answers   IAS, IBM,

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A) Which two are benefits of Teradata's support for ANSI Standard SQL? (Choose two.) 1.data is distributed automatically 2.queries get optimized to better plans 3.submit queries from other database systems 4.can interface with BI tools B) Which statement is true when comparing the advantages of third normal form to star schema? 1.Star schema tends to have fewer entities. 2.Star schema requires additional data storage. 3.Third normal form tends to have fewer entities. 4.Third normal form requires additional data storage. C)Which two sets of functions does the Parsing Engine (PE) perform? (Select two.) 1.sorting, formatting, and aggregating of the final answer set 2.flow control of the data to and from the participating tables 3.SQL statement interpretation, syntax validation, and semantic evaluation 4.dispatching the step execution sequence to the AMP via the BYNET D) Which two can be achieved with Teradata Active System Management (TASM)? (Choose two.) 1.disable hardware 2.react to hardware failure 3.influence response times 4.collect metadata E) Which three mechanisms can be used to ensure security within the Teradata Database? (Choose three.) 1.views 2.spool limits 3.roles 4.access rights 5.profiles

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To convert IDMS to DB2, how to deal with IDMS occurs and redefined clause?

0 Answers  

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agregator gives one to many records or many to one record

1 Answers   IBM,

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Explain the role of indexing in databases?

0 Answers  

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what is difference between primary key and unique key ?

2 Answers  

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What are the disadvantages of cursors? How can you avoid cursors?

2 Answers  

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Explain about normal forms?

0 Answers  

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