Evolution of sciences ◆1960s: Data collection database creation, IMs and network DBMS ◆1970s: Relational data model, relational DBMS implementation ◆1980s: RDBMS, advanced data models(extended-relational OO, deductive, etc.) Application-oriented DBMs(spatial, scientific engineering, etc.)11 Evolution of Sciences 1960s: ◼ Data collection, database creation, IMS and network DBMS 1970s: ◼ Relational data model, relational DBMS implementation 1980s: ◼ RDBMS, advanced data models (extended-relational, OO, deductive, etc.) ◼ Application-oriented DBMS (spatial, scientific, engineering, etc.)