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GeneralRe: how to create a database if data is given? Pin
Member 1127090223-Oct-15 18:47
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GeneralRe: how to create a database if data is given? Pin
Eddy Vluggen23-Oct-15 23:22
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GeneralRe: how to create a database if data is given? Pin
Member 1127090216-Nov-15 23:41
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GeneralRe: how to create a database if data is given? Pin
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QuestionAmazon RDS IP Address Pin
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QuestionValidating data between RDBMS (Mysql/ Oracle / DB2) and Hadoop ( HDFS/ Hive) Pin
Member 1204409721-Oct-15 4:14
Member 1204409721-Oct-15 4:14 
I have got this assignment question on database. Not getting any idea of how to solve this. Can anyone please help me ?
========================================================
“Mr. A” and “Mr. B” data warehousing experts working for “XYZ” company, currently they are developing ETL-Validator framework for big-data technology i.e. Validating data between RDBMS (Mysql/ Oracle / DB2) and Hadoop ( HDFS/ Hive).
Source database (RDBMS) constains millions of records and all the records from source are already migrated to target database (Hadoop - Hive).
They need your help in implementing following scenario's

A. Column Level comparision between source and Target Database (i.e. Comparing each column of source Database with each column of Target Database ) .
Now your task is to :
1. Assume suitable database on source side and design table structure(student / retail banking /telecommunication / insurance , any other) for the same having atleast ten columns.
2. Assuming that buffer size = 500, propose efficient strategy to reduce the number of comparision between source and target columns records.
3. Write SQL query for the solution proposed in step#2.
4. Draw query tree for the query of step#3.
5. Write psudo code or program ( Java / C# ) for proposed solution in step#2 and step #3.

B. As foreign key constraint in not implemented in Target Database (Hadoop – Hive ) , implement foreign key validator for target database.
1. Assuming that table used in #A.1 is already present in target DB, now construct one more table on target side which references to primary key of table used in #A.1
2. Assuming that buffer size=500, propose efficient strategy with min. Comparision to validate foreign key constraint.
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AnswerRe: Validating data between RDBMS (Mysql/ Oracle / DB2) and Hadoop ( HDFS/ Hive) Pin
Richard Deeming21-Oct-15 8:12
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QuestionSchema update using SQL Server Data Tools Pin
indian14319-Oct-15 12:15
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AnswerRe: Schema update using SQL Server Data Tools Pin
Mycroft Holmes19-Oct-15 14:35
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indian14319-Oct-15 15:54
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QuestionReferencing DacPac file from different Server and Database Pin
indian14319-Oct-15 10:34
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AnswerRe: Referencing DacPac file from different Server and Database Pin
Mycroft Holmes19-Oct-15 14:30
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QuestionLimiting the scope of a Table variable Pin
indian14317-Oct-15 6:35
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AnswerRe: Limiting the scope of a Table variable Pin
Mycroft Holmes17-Oct-15 13:40
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indian14319-Oct-15 10:28
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QuestionMove GROUP_CONCAT's comma values to columns Pin
Jassim Rahma15-Oct-15 6:45
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AnswerRe: Move GROUP_CONCAT's comma values to columns Pin
Jassim Rahma15-Oct-15 8:02
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Jassim Rahma24-Oct-15 1:28
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QuestionFilling many to many rel table using Select statement Pin
indian14314-Oct-15 7:18
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AnswerRe: Filling many to many rel table using Select statement Pin
Mycroft Holmes14-Oct-15 12:50
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KDGOLE14-Oct-15 21:27
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GeneralRe: Filling many to many rel table using Select statement Pin
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