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Ab Initio Online Training Concepts
TYPES Partition Components
Departition Components
Multifile System(MFS)4
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2
3
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Contents
Transform Components
Working with Databases
Miscellaneous component
Dataset Components8
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7
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Contents
FTP Components
Compress Components
Validate Component
Translate components12
9
10
11
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Ab Initio Online Training Concepts
• Introduction to Ab initio with excellent faculties• Ab initio detailed architecture• Features of Ab Initio Graph, Component, Ports, DML• Introduction to .dat and .dml files• Ports available on overall components
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Departition Components
• Concatenate• Gather• Interleave• Merge
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Multifile System(MFS)
Types of parallelismLayouts
• Sort Components• Sort• Sort with in groups• Sample• Partition by key and sort
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Transform Components
• Filter by expression• Aggregate• Scan• Rollup• Denormalize Sorted• Normalize• Reformat• Match sorted• Dedup sorted
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Filter by Expression filters data records according to a specified DML expression.Basically it can be compared with the where clause of sql select statement.Different functions can be used in the select expression of the filter by expression component even lookup can also be used.
Filter by expression
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Join reads the records from multiple ports, operates on the records with matching keys using a multi input transform function and writes the result into output ports.
Reformat changes the record format of data records by dropping fields, or by using DML expressions to add fields, combine fields, or transform the data in the records. By default reformat has got one output port but incrementing value of count parameter number. But for that two different transform functions has to be written for each output port.
Join
Reformat
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Working with Databases
• Database components• Run SQL• Input Table• Output Table• Truncate Table• Update table
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Database components are generally used to read from/ write to different databse. The basic database components are “run sql” , “input table”, “output table”.
Input Table unloads data records from a database into an Ab Initio graph, allowing you to specify as the source either a database table, or an SQL statement that selects data records from one or more tables.
Output Table loads data records from a graph into a database, letting you specify the records' destination either directly as a single database table, or through an SQL statement that inserts data records into one or more tables.
Run sql is a database component. It executes SQL statements in an Oracle or SQL Server database.
Miscellaneous component
• Gather logs• Run program• Redefine format• Trash• Replicate
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Dataset Components
• Input File• Output File• Lookup File• Intermediate File
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FTP Components
• FTP From• FTP To
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Compress Components• Compress• Uncompress• Gzip• Gunzip
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Validate Component
• Check Order• Generate Records• Generate Random bytes• Compare Records• Compute Check Sum• Compare Check Sum
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Translate components
• Record XML• Write XML• Project and Sandbox• Performance Tuning
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