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You are testing the performance of a query the first time you run the query, the performance is slow. the second time you run the query, the performance is fast. why is this?
I HAVE A PI ON COL A THE NEXT DAY I WANT CHANGE THE PI ON COL B? PLS SEND ME THE ANS
What is dbms explain in brief?
Explain the rollup operator?
What are the main phases of database development?
Write the fastest query to find out how many rows exist in a table?
How to use timestamp datatypes
You have two tables with a one to many join based on a field named id. You need to find records in the parent table that are not represented in the child table. how would you accomplish this?
How can I detect whether a given connection is blocked?
What you can do to remove data from the cache and query plans from memory for testing the performance of a query repeatedly?
What are the key features of dbms?
Hi , any one can help me on the same,this is regarding the Informatica Function doc,i want to know how developer is will develop the mapping. pl forwar the any function doc .just for my references. svlc75@yahoo.co.in
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
What is data modeling with example?
When installing the datastage7.5x2 edtion iam getting aproblem i.e the cpu count is 2 but the cpu count in installation is one . how can i install in my p.c (system is dual core).
