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Low Level Design

This document provides technical details for a data warehouse/data mart project, including server and connectivity details, ETL process details like source and target tables, load order, and notification mechanisms. It contains sections for source and target mapping details, subject area details, standard notification procedures, and server folder structures.
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0% found this document useful (0 votes)
331 views23 pages

Low Level Design

This document provides technical details for a data warehouse/data mart project, including server and connectivity details, ETL process details like source and target tables, load order, and notification mechanisms. It contains sections for source and target mapping details, subject area details, standard notification procedures, and server folder structures.
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
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Low Level Design Template

This document compares Informatica PA versions for Dashboard & Chart functionality

DOCUMENT HISTORY
Date Revision Change
0.01D Created Initial Draft
26-Dec-05 1.0 Baselined

DOCUMENT CONTROL INFORMATION

Prepared By Kranti Modi

Maintained By BI CoE
All suggestions, comments, change requests and request for copies should be addressed to the BI-CoE Group.

Approved By BI CoE

Reference

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o the BI-CoE Group.

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Low Level Design

1. Data Warehouse Details


Customer Name
Application Name
Application Type
Domain Area
Application Usage
Application Platform
Database
Data quality Tools
ETL Tool
DWH Monitoring Tool
Scheduler
Front End
Middle Ware
Load Window
Data Window
Data Warehouse availability

2. Technical Details
Server Type Usage

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3. Connectivity Details

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Server Name IP Address Connectivity Location Domain

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This metrix helps to analyze usage of dimensions

Subject Area
Dimension1 Dimension2 Dimension3

Fact1

Fact2

Fact3

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Dimension4

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List out all the sources used in ETL Process

Source Descriptio Platfor Data Method of Server Extractio Min


Application n m Storage extractio Name n Order Load
n

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Max Avg Source Non-
Load Load Availability availability
handling

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Prepare a separate sheet for individual subject area

Total Subject Areas

Total Target Tables


Total Target
columns
Total Business
Rules
Total
Transformation
Total DB Rules
Rules
Subject Area:
Target related Information Column Added Source related information
Sr. Target Table Name Target Column Data Null Source Table/ File
No Type Option

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Added Source related information Column AddedTransformation
Column Added Rules
Source column Data Type Null Option Data Expression / Default Error/
Conversion Join value if Exception
Rule Condition in NULL Handling
case of
Lookup

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Prepare a separate sheet for individual subject area

Total Subject Areas

Total Target Tables

Total Target
columns
Total Business
Rules
Total
Transformation
Rules
Total DB Rules

Subject Area:
Target related Information Column Added Source related in
Sr. Target Table Name Target Column Data Type Null Source Table/ File
No Option

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Source related information Column Added Transformation
Column Added Rules
Source column Data Null Data Expression / Join Default
Type Option Conversi Condition in case of value if
on Rule Lookup NULL

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on Rules
Error/ Exception
Handling

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List all target tables and their load order for individual data warehouse/data mart

Sr.No Subject Area Target Table Name Table Type Load Load
Order Strategy

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Column Added
Load Frequency Mandetory? Staging Restarta
Required? bility?

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Worksheet has been added to give more details abt the session related properties

Mapping Source
Repository Folder Mapping Session Source Source Connection Table
name Name Name Name Type File name
Location
s_mapping
mapping_1 _1 DB2 NA UserID_Src1
s_mapping
REPDEV mapping_2 _2 Flat File Location ? NA
s_mapping
REPDEV mapping_3 _3 DB2 NA UserID_Src2

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Source Target
Server Pre - SQL Post - Target Target Connection Table Table Server
Name SQL Type File name Properti Name
Location es

DB2 NA UserID_Stage

None None DB2 NA UserID_Stage

None None DB2 NA UserID_DWH

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Pre-SQL Post - Post
SQL Pre Session Session Session
tasks Tasks Frequency

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Worksheet has been added to provide summary of the generic details related to a session

Connection Details (Source/ Target):

Connection Name Host User ID Password


UserID_Src1
UserID_Src2
UserID_Scr3
UserID_Stage
UserID_DWH

Standard Notification Mechanism Email

Stage to Notify What to Notify User Group to Notify Email Tas

To (email - ids)
Session Failure Failure details Production support group
Workflow Completion Data Load completion Generic User ID

Server Folder Structure:

Mention the path where the following files are stored on the server:
Source Files \srcfiles
Target Files \tgtfiles
Parameter Files \prmfiles
Session Log Files \sesslogs
Session Bad Files \badfiles
Indicator Files \indfiles
Workflow Log Files \wkflogs

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Connect String Default Remote
Directory

Email Task Details

Email Subject Email Body


Session Failure
Data Load Completion

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Highlight the mechanism applicable for your project.

Standard Notification Mechanism E-Mail


Pager
Front-End Messages
Passive Mode - Database store

Stage to Notify What to Notify Mechanism to Notify User Group to Notify

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Archive Notification messages?

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