The table of Office is similar to the table of Customers and Salesman but it contains only the data of companys sales departments.
Information about items is inserted into the table of Parts. The table of Invoices is connected with the table of Customer (CNO), the table of Details (ONO), and the table of Salesman (SALESMAN) because invoices must contain the customer and sales office, and the items name.
The difference between the two databases lies in parent and child nodes child nodes can have several parent nodes in the network database.
The relational database has different tables, each of which consists of rows and columns for data elements.
These connections between tables increase the amount of hard disk space required for data maintenance and changes made in one table affect other tables automatically.
Table 1 The Structure of Classical Relational Database Eeva software is constructed to work in the individual, company, and distributed databases.
There are three most common types of DBMS: hierarchical, network and relational.
Fields and records of the hierarchical database are structured in nodes. Each entry has one parent node, which may have several child nodes.
Every change in the accountancy law is also taken into account in the previous and present versions of Eeva.
The major changes concern the calculation of remuneration.