Between the ISP computer lab and the remote computer there are two to four other computers that route the packets of information. Paper and Pencil Computer. Making use of our previous work on switches and logic gates, we come now to a real computer. A very small computer, that can just barely function, but a general purpose computer nonetheless. What is a database Storage of information in fields and records which are predefined.
Every record has the preset fields.
This regular structure lets the database work efficiently with large files. A Table is a set of fields and records. In a Relational Database, several tables can be joined together, combining information from several sources. This also allows for information to be stored more efficiently. Each course that you take is stored with your student ID in another table.