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Abinitio Course Contents :
Introduction to Abinitio
Abinitio Architecture
Graph Programming
Introduction to .dat and .dml files
Partition Components
Braod Cast
Partition by Expression
partition by range
partition by community
partition by percentage
partition by Round Robin
Departition Components
Concatenate
Gather
Interleave
Merge
Multifile System(MFS)
Types of parallelism
Layouts
Sort Components
Sort
Sort with in groups
Sample
Partition by key and sort
Transform Components
Filter by expression
Aggregate
Scan
Rollup
Denormalize Sorted
Normalize
Reformat
Match sorted
Dedup sorted
Working with Databases
Database components
Run SQL
Input Table
Output Table
Truncate Table
Update table
Phase and check Points
Miscellaneous component
Gather logs
Run program
Redefine format
Trash
Replicate
Dataset Components
Input File
Output File
Lookup File
Intermediate File
FTP Components
FTP From
FTP To
Compress Components
Compress
Uncompress
Gzip
Gunzip
Validate Component
Check Order
Generate Records
Generate Random bytes
Compare Records
Compute Check Sum
Compare Check Sum
Translate components
· Record XML
· Write XML
Project and Sandbox
Performance Tuning
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Ab Initio means “ Starts From the Beginning”. Ab-Initio
software works with the client-server model.
The client is called “Graphical Development Environment” (you can call it
GDE).It resides on user desktop.The server or back-end is called Co-Operating
System”. The Co-Operating System can reside in a mainframe or unix remote
machine.
The Ab-Initio code is called graph ,which has got .mp extension. The graph from
GDE is required to be deployed in corresponding .ksh version. In Co-Operating
system the
corresponding .ksh in run to do the required job.
How Ab-Initio Job Is Run What happens when you push the “Run” button?
•Your graph is translated into a script that can be executed in the Shell Development
•This script and any metadata files stored on the GDE client machine are
shipped (via
FTP) to the server.
•The script is invoked (via REXEC or TELNET) on the server.
•The script creates and runs a job that may run across many hosts.
•Monitoring information is sent back to the GDE client.
Ab-Intio Environment The advantage of Ab-Initio code is that it can run in both
the serial and multi-file system environment. Serial Environment: The normal
UNIX file system. Muti-File System: Multi-File System (mfs) is meant for
parallelism. In an mfs a particular file physically stored across different
partition of the machine or even different machine but pointed by a logical
file, which is stored in the co-operating system.
The logical file is the control file which holds the
pointer to the physical locations.About Ab-Initio Graphs: An Ab-Initio graph
comprises number of components to serve different purpose. Data is read or
write by a component according to the dml ( do not confuse with the database
“data manipulating language” The most commonly used components are described in
the following sections.