Answer Posted / maruthi

ALL THESE THREE(MERGE,JOIN,LOOKUP) ARE USED TO JOIN TABLES
BASED ON THE KEY COLUMNS. AND THE DIFFERENCES ARE:
1.)MAIN DIFFERENCE:ALL THESE THREE WILL DIFFER ON THE
POPULATION OF DATA ONCE AFTER KEY COLUMN MATCHES,AND THE
MEMORY USED TO STORE TABLES.
MERGE:-CAN HAVE ANY NUMBER OF INPUT LINKS,SINGLE O/P
LINK,AND NO OF REJECT LINKS AS MANY OF UPDATE LINKS,SO WE
CAN HAVE REJECT DATA IN ANOTHER TABLES,(JOINER DONT
SUPOERTS ANT REFERENCE OR REJECT LINKS)

How can we improve the performance in datastage?

1105

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how to use self join using datastage ? can u tell me using stage how can we implemnet the self join

5123

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What is the difference between account and directory options ?

1182

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What are routines in datastage? Enlist various types of routines.

1102

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What all the types of jobs you developed?

1181

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Whats difference betweeen operational data stage (ods) and data warehouse?

1116

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What is a merge?

1170

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Is possible to create skid in dim,fact tables?

2637

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Difference between data warehousing and olap?

1093

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Explain the datastage parallel extender (px) or enterprise edition (ee)?

1229

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Highlight the main features of datastage?

1160

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Hi,can any one please mention list of dimension and fact tables for Sales and Distribution System for a Pharmacutical company.

2295

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create a job that splits the data in the Jobs.txt file into four output files. You will direct the data to the different output files using constraints. • Job name: JobLevels • Source file: Jobs.txt • Target file 1: LowLevelJobs.txt − min_lvl between 0 and 25 inclusive. − Same column types and headings as Jobs.txt. − Include column names in the first line of the output file. − Job description column should be preceded by the string “Job Title:” and embedded within square brackets. For example, if the job description is “Designer”, the derived value is: “Job Title: [Designer]”. • Target file 2: MidLevelJobs.txt − min_lvl between 26 and 100 inclusive. − Same format and derivations as Target file 1. • Target file 3: HighLevelJobs.txt − min_lvl between 101 and 500 inclusive. − Same format and derivations as Target file 1. • Rejects file: JobRejects.txt − min_lvl is out of range, i.e., below 0 or above 500. − This file has only two columns: job_id and reject_desc. − reject_desc is a variable-length text field, maximum length 100. It should contain a string of the form: “Level out of range: ”, where is the value in the min_lvl field. My Question is how do you write the stage variable for reject rows.

2723

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how to read 100 records at a time in source a) hw is it fr metadata Same and b) if metadata is nt same?

2186

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What is ibm datastage flow designer?

1150

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