Roles and Responsibilities of ETL Developer in Data Stage

Roles and Responsibilities of ETL Developer in Data Stage

ETL Developer roles and responsibilities are:

-Understand Requirements.

-Prepare Questions.

-Logical design (flow chart)

-Physical design (coding)

-Unit test

-Performance Tuning

-Peer view – if it is ok, proceed to next step, if else start again from 3 step

-Design Turnover Document (DTD)/ Technical Design Document (TDD)/ Detailed Design Document (DDD)  -- > produces job Report

-Back ups

-Job sequencing

General flow of a project:

Ware house modeling

- - >  Architecture

- - >  Dimensional modeling(schemas)

- - >  Dimensional characteristics

- - >  Fact characteristics

- - > for a developer if he is given by Document he needs to, follow all the 10 rules and regulations.

Document

__ One Record for each Kindle (Multiple Records  for multiple address and Dummy Records for joint Accounts)

• In a Banking sector, for each and every customer, he may have many accounts such as

    - - >So, one record should be maintained for every customer

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Format of Mapping Document    - - > We have two formats of Mapping documents

1. Word

2. Excel sheet

- - > we may also get job templates as input for designing jobs. Format

Example

EXP _ EMP à hire date à EMP

Dept Name à DNO àDEFT

First Name

Last Name

Middle Name.

- - >  from these 5 details a Mapping document is text prepared and given to the developer

Exp _ EMP :-

To find out the experience of an employee we need to  know the hire date  from the EMP table

So, EMP is one of the Source entity, and its Source attributes will be ENO, ENAME, Hire date, DNO .

DEPT Name :-

To Know the Dept Name, We need to Know the DNO from DEPT table

So, DEPT is another Source Entity with DNO, DANME as Source attributes.

- - >first, last and Middle Names Will be taken from the EName of EMP Table.

- - > Now the Target Attribute, that we need to find out are, ENO, First Name, Middle Name, Last Name, EXP_EMP, Dname

Target Entity or Target  Table Will be EXP_ EMP Conventions:-

Set of rules to be followed

There are 4 types of conventions that are to be followed while naming :

-Job Naming

-Stage Naming

-Variable Naming

-Parameters Naming