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 : __________________ _______________ ________________|_________________| |______________ ...
Orchestrate itself is an ETL tool with extensive parallel processing capabilities and running on UNIX platform. Datastage used Orchestrate with Datastage XE (Beta version of 6.0) to incorporate the parallel
Using "dsjob" command as follows. dsjob -run -jobstatus projectname jobname
Latest Answer : u can use dsjob executable command from unix or command line.The previous post was correct.Hanu. ...
Default cache size is 256 MB. We can incraese it by going into Datastage Administrator and selecting the Tunable Tab and specify the cache size over there.
Latest Answer : The default cache size is 128 MB. This is primarily used for hash file data cache in the server. This setting is only can be done in Administrator not in job level. Job level tuning is available only for Buffer Size. ...
We use a) "Iconv" function - Internal Convertion. b) "Oconv" function - External Convertion. Function to convert mm/dd/yyyy format to yyyy-dd-mm is Oconv(Iconv(Filedname,"D/MDY[2,2,4]"),"D-MDY[2,2,4]")
Latest Answer : we can achieve this conversion using transformer stage conversion functions in PX.Hanu. ...
There are 3 types of views in Datastage Director a) Job View - Dates of Jobs Compiled. b) Log View - Status of Job last run c) Status View - Warning Messages, Event Messages, Program Generated Messages.
Latest Answer : From what I know there are four views1> Status 2> Schedule3> Log4> Detail. ...
What are the difficulties faced in using DataStage ? or what are the constraints in using DataStage ?
Latest Answer : U can call external functions, subroutines by using Before/After stage/job Subroutines : ExecSHExecDOSor By using Command Stage Plug-In or by calling the routine from external command activity from Job Sequence. ...
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 ...