Embodiments are provided to merge, manage, create, and reuse database parts in a computer system. Database parts may include database tables, datatypes, field combinations or entire databases. A selection of a database part is received by a database software application executing on a computer system. The application may be configured to check for metadata associated with the database part to identify an action property. If, after checking for the metadata, a merge action property is identified, then the application may check for a metadata property associated with a database table. If a merge action associated with the database table is identified, then the application may merge the database part with the database table in the database. The application may also be configured to generate a user interface for creating database parts using database tables and for creating a database part by saving a database.