Converting COBOL Data to SQL Data GDTETL Part

Converting COBOL Data to SQL Data: GDT-ETL Part 1

GDT ETL p p What is ETL? n Extract Transform Load l Extract data from your legacy system. l Transform (Convert or cleanse). l Load the data into the relational database, data warehouse, data mart or Operational Data Store. Why GDT-ETL? n Built for Legacy Systems. n Native access to ISAM data. n Transformation from COBOL data types to more general types. n Allows you to focus on where the data is going not how you get access to it. GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

GDT ETL p Data flow for a system running GDT n MF file system to a relational database MF Files GDT-ETL RDMS GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

GDT ETL p Data flow for Legacy Systems UFA S Fileconv 2 MF Files RDMS GDT-ETL GDT GCOS GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

GDT ETL p ETL Features n Command line tool and now with a Graphical User Interface (to be shown) n Object Oriented Design. n Will work on Windows or UNIX platforms. n Comprehensive error logging and process monitoring. n Will work with existing enterprise scheduling facilities. p ETL Requirements n Windows l l n GDT V 4. 1. NET Framework 2. 0 Solaris l GDT V 4. 1 GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

What can I do with GDT-ETL? p There are two main features of this tool. n Help build database schemas from your ISAM data. l l l n Creating Data marts Data warehouse Data Stores Loading data into a database system. GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

GDT ETL A Working Example! ICOM system GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

SQL 1 GEN process p GDT process that generates a File Access Component (GDTFAC. DLL) n n To be used by GDT ETL to generically access all Micro Focus ISAM files Configuration l l n n SQLCONV. PAR FILE DEFINITION(S) fd’s FILE SELECT STATEMENTS MULTIPLE 01 RECORD DEFINITION PARAMETER FILES Requires GDT V 4. 1 GDTFAC. DLL contains all necessary file info. l Key information, data types, record types, fields etc. . GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

A Typical Production Environment ISAM Order Master File Customer Data Batch process Report Data Report Generation GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

Using the ORDERS file FILE DEFINITION S Q L 1 G E N PLUS FILE COBOL Select statement PLUS GDTSQL Parameter File ---------------------------------------------Creates GDTFAC. DLL GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

The ETL process G D T E T L GDTFAC DLL Order Info. File Access Component PLUS ETL PARAMETER FILE ---------------------------------------------- Delete ORDER Master Database Table Create ORDER Master Database Table Load ORDER Master Database Table GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

Results of the ETL process d L se a b a vi e th ET a Lo ta a t Da is in e th da GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

ETL in a nutshell p Step 1: File Analysis n Using the File Access Component built by GDTFAC. DLL, the ETL tool first analyzes the file layout for each file. GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

ETL in a nutshell p Step 2 - Build the tables and the relationships in SQL n n Each record denotes a new table. Each sub record denotes a new table with a 1 to many relationship with the parent record. l n Nested OCCURS within a file produces more relationships. Each field produces a field in a SQL table and ETL maps COBOL data types to the SQL Servers data types. GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

ETL in a nutshell p Step 3: n Optional l Modify the table schema and stored procedures to suit your needs. Build transformations as needed. p Step 4: n Load the Data l Read each file, extract the data, transform from COBOL data types to database server data types and load the data into the database. GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

GDT ETL IN ACTION p How does ETL build database schemas? n When Generating a table schema GDT-ETL makes the following assumptions. l l Each file consists of 1 or more record types. Each record in a file consists of 1 or more fields and it may contain hierarchy of sub records as denoted by the OCCURS clause. Each field has a location in a record as well as an associated COBOL data type. Group name and redefines are ignored. GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

GDT ETL IN ACTION p Create the database schema and stored procedures. n n Build the tables and relationships Three basic data type transformations: l l l n PIC X(NN) to char(NN) PIC 9(NN) to INT PIC S 9(NN)V 9(NN) to double Setup default stored procedures for each table: l For each table there are 3 separate stored procedures Insert Update (ODS Only) Delete (ODS Only) l l The tables can be modified but the stored procedures must reflect any schema modifications. The store procedures can be modified but the parameters must stay the same. GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

GDT ETL IN ACTION p Build the default database objects n Setup the ETL Configuration. l l n Set database properties. Reference the location of the file access component. Build the database objects. GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

Building Transformations p What value do transformations add? n Allows for cleansing of data before it enters the database. l l n Determine if it is accurate. Avoid data corruption. Create more interesting data transformation l Example: Date time GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

Building Transformations p Use Data Integration tools n Business. Objects Data Integrator. p Develop the transformations by hand. l l Modify the table layout if desired. Modify the default stored procedures to setup desired transformations. GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

ETL in a nutshell p ETL Configuration Utility - GUI l l l Set the database properties. Modify which files you want to load. AND MORE TO COME…. . GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans

GDT-ETL p THE DEMONSTRATION! GDT 2006 International User Conference: Evolving the Legacy – Revolutions June 25 - 28 Palm Springs, California Converting COBOL Data to SQL Data: GDT-ETL Part 1 Doug Evans