Pervasive Software was a company that developed software including database management systems. Sage 50 and Peachtree Accounting Software uses Pervasive for their database engine.
A group of related data files. Each Sage 50 or Peachtree Accounting Company is considered a DataSet.
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Open Database Connectivity (ODBC) is a standard application programming interface (API) for accessing database management systems (DBMS). The designers of ODBC aimed to make it independent of database systems and operating systems. You can use ODBC to access your Sage 50 / Peachtree Accounting Software from different software products like Microsoft Access or Excel.