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DATASTAGE Frequently asked Questions and Tutorials: 1. Answer: In a Hashed File, the size of the file keeps changing randomly. The often Parameterized variables in a job are: DB DSN name, username, password, dates W. X, if so tell us some the steps you have taken in doing so? The following are some of the steps: Definitely take a back up of the whole project(s) by exporting the project as a file See that you are using the same parent folder for the new version also for your old jobs using the hard-coded file path to work.
Primary Key is a combination of unique and not null. DSWait For File Checks if a BASIC routine is cataloged, either in VOC as a callable item, or in the catalog space. (Oconv) ________________________________________ DATASTAGE FAQ from GEEK INTERVIEW QUESTIONS ________________________________________ Question: Dimension Modeling types along with their significance Answer: Data Modelling is broadly classified into 2 types. Most importance of using it is, it is independent of underlying database, i.e.
DSTranslate Code Suspend a job until a named file either exists or does not exist. Question: Dimensional modelling is again sub divided into 2 types. Answer: Surrogate Key is a Primary Key for a Dimension table.
We can increase it by going into Datastage Administrator and selecting the Tunable Tab and specify the cache size over there. Dynamic files do not perform as well as a well, designed static file, but do perform better than a badly designed one. If the size of the file increases it is called as "Modulus". Now Datastage has purchased Orchestrate and integrated it with Datastage XE and released a new version Datastage 6.0 i.e Parallel Extender. Most importance of using it is it is independent of underlying database. Surrogate Key is not affected by the changes going on with a database. How to run a Shell Script within the scope of a Data stage job? Link Collector: It collects the data coming from partitions, merges it into a single data flow and loads to target. The following programming components are classified as routines: Transform functions, Before/After subroutines, Custom Uni Verse functions, Active X (OLE) functions, Web Service routines Q 43 What is data stage Transform? Answer: Fact table - Table with Collection of Foreign Keys corresponding to the Primary Keys in Dimensional table. Based on the primary key values in dimensional table, then data should be loaded into Fact table.
b) Dynamic - sub divided into 2 types i) Generic ii) Specific. What is Modulus and Splitting in Dynamic Hashed File? In a Hashed File, the size of the file keeps changing randomly. Datastage used Orchestrate with Datastage XE (Beta version of 6.0) to incorporate the parallel processing capabilities. A) Surrogate Key is a Primary Key for a Dimension table. A) We use a) "Iconv" function - Internal Conversion. 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]") 13 How do you execute datastage job from command line prompt? Link Partitioner: It actually splits data into various partitions or data flows using various partition methods. A) Dimensional modeling is again sub divided into 2 types. A) Data in a Database is a) Detailed or Transactional b) Both Readable and Writable. Routines are stored in the Routines branch of the Data Stage Repository, where you can create, view or edit. Answer: Data in a Database is A) Detailed or Transactional B) Both Readable and Writable. Question: What is the flow of loading data into fact & dimensional tables? Load - Data should be first loaded into dimensional table.