1. ODBC Or How can I really see my data…?

2. ODBC defined: Open Open DataBase DataBase Connectivity Connectivity –ODBC applications can access data in many of today's leading database management systems (DBMSs) by using ODBC drivers written to access those DBMSs.

3. Pervasive provides the Driver for ODBC There are TWO drivers There are TWO drivers 1 at the “server” 1 at the “server” 1 at the “workstation” 1 at the “workstation”

4. DBA / EVO and PERVASIVE DBA / EVO is a “Transactional Database”. DBA / EVO is a “Transactional Database”. Pervasive provides the Engine for the Database to interact with the O/S. Pervasive provides the Engine for the Database to interact with the O/S. Pervasive has Two Engines: Relational & Transactional Pervasive has Two Engines: Relational & Transactional –The Relational is for SQL type databases. –The Transactional is for Btrieve or “flat file” databases

5. We use the ODBC to connect thru the Relational engine of Pervasive to Access the Transactional database of DBA / EVO. The connection uses your Local Area Network on the established “protocol”: The connection uses your Local Area Network on the established “protocol”: –TCP/IP –IPX/SPX –NETBIOS

6. Client to Server Connection

7. Server Side connection:

8. The ODBC connects to the DDF’s DDF’s : Data Dictionary Files. DDF’s : Data Dictionary Files. –Maintain the definitions of the Files(tables) used in the Database. As well as Each Field name, it’s Attribute, and indexes for Each File(table). As well as Each Field name, it’s Attribute, and indexes for Each File(table).

9. Use the Correct set of DDF’s !!

10. Creating specific Company DDF‘s

11. …. And in EVO..

12. Results in Correct DDF’s in your Company Data Directory….

13. TA DA ! You have QUESTIONS? You have QUESTIONS? We provide Answers… We provide Answers… www.digitalconsulting.org www.digitalconsulting.org 760-832-2536 760-832-2536 davemeng@earthlink.net davemeng@earthlink.net