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![]() Related Questions Surrogate Key is a Primary Key for a Dimension table. Most importance of using it is it is independent of underlying database. i.e Surrogate Key is not affected by the changes going on with a database. Latest Answer : surrogate key is nothing but a primary key,it gives a serial no. to all records.surrogate key is act's as a major role in type 2 scenario.if u have any updates to be applied on a database it will be directely effected on datawarehouse part(using surrogate ... Fact table - Table with Collection of Foreign Keys corresponding to the Primary Keys in Dimensional table. Consists of fields with numeric values. Dimension table - Table with Unique Primary Key. Load Latest Answer : __________________ _______________ ________________|_________________| |______________ ... Used for Look-ups. It is like a reference table. It is also used in-place of ODBC, OCI tables for better performance. Latest Answer : We can also use the Hash File stage to avoid / remove dupilcate rowsby specifying the hash key on a particular fileld ... What are other Performance tunings you have done in your last project to increase the performance of What are other Performance tunings you have done in your last project to increase the performance of slowly running jobs? Staged the data coming from ODBC/OCI/DB2UDB stages or any database on the server using Hash/Sequential files for optimum performance also for data recovery in case job aborts.Tuned the OCI stage for 'Array First we execute the jobs that load the data into Dimension tables, then Fact tables, then load the Aggregator tables (if any). Latest Answer : Simply by using "usage variyable" stage in job sequencers. ... The above might rise another question: Why do we have to load the dimensional tables first, then fact tables: As we load the dimensional tables the keys (primary) are generated and these keys (primary) are Foreign keys in Fact tables. Latest Answer : Dear User. A datawarehouse is a repository(centralized as well as distributed) of Data, able to answer any adhoc,analytical,historical or complex queries.Metadata is data about data. Examples of metadata include data element descriptions, data ... Read Answers (1) | Asked by : Kumar Latest Answer : Merge stage in used for only Flat files in server edition ... Read Answers (3) | Asked by : rcp Latest Answer : natural key :- seq no system assigned ..skey :- user assigend ! u can start with any number like 100,10001,2002.. ... Read Answers (2) | Asked by : CNDRAA How to distinguish the surogate key in different dimensional tables?how can we give for different dimension tables? Read Answers (1) | Asked by : mallikharjuna reddy
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