DataTern has Patent No. 5,937,402 on using objects to access a relational database. The patent was issued in 1999, and obviously people were using objects to access databases since the 80's. Basically, any software written in the past 15 years that access a database is likely violating this patent. This is true for Microsoft technologies, Java, SAP, etc. Here is its claim 1:
1. A method for enabling an object oriented user application to access a relational database having one or more physical tables segmented into rows and columns, comprising:
- defining a logical table comprising a subset of columns from at least one of the one or more physical tables;
- designating one column of the logical table as a logical primary key column;
- forming a normalized relational schema object representing the logical table;
- generating, responsive to the normalized relational schema object, one or more object classes associated with the normalized relational schema object; and
- employing an object of an object class including the one or more object classes associated with the normalized relational schema object and a respective corresponding logical primary key value to access data in the at least one of the physical tables in the relational database.
I am looking for prior art that shows programmers used objects to access databases long before 1999.