How To Create A System For A

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Data input in a meme and the formatted memo-fields is carried out in the same way, as well as in the alphanumeric. However, at data input in a meme and the formatted memo-fields Paradox practically does not introduce restriction on volume of the entered data. During editing a meme and the formatted memo-fields it is possible to use the Memo View mode which gives some opportunities on text processing and increases functionality of the keyboard in comparison with the Field View mode.

It is possible to define any catalog as the worker. Paradox appropriates to the working catalog a pseudonym: WORK: and if other pseudonym was appropriated to this catalog earlier, Paradox will use all the same for the working catalog a pseudonym: WORK:.

Distinguish a unique combination of extraordinary simplicity and transparency to huge opportunities of functionally complete control system of data (in it and there is "paradox") from numerous features of Paradox. And as the result of such paradoxical combination - the most powerful DBMS submits not only to the professional programmer, but also the user who does not have idea about programming or information processing on the computer.

Paradox supports two types of a format of tables - Paradox and dBASE. When using tables of a Paradox-format it is necessary to understand how keys of tables work (dBASE too uses indexes, but in dBASE there is no concept of primary key of that sense, as in Paradox).

- to use small databases. If it is necessary to organize a database under large volume of information, usually, it is better to place it in some small interconnected tables, than in one comprehensive.

Each visible object of Paradox is displayed in the special type of a window. Each type of a window possesses specific to it a set of the teams and functions applicable only to it. But as DeskTop contains all other windows, teams and the DeskTop functions are available to all of them.

During the work often happens to databases it is necessary to print out necessary information. Paradox provides powerful tools of generation of reports. The user can sort and group records, make necessary calculations over fields, and also order and submit data practically in any format.

In shape it is possible to place some buttons and to attach to them various methods. The user can attach some various methods to one button, each of which becomes more active a separate event.

As in practice it, naturally, is impossible, it is necessary to resort to some restrictions. Use of hierarchical and network models accelerates access to information in a database. But as each element of data has to contain references to some other elements, considerable resources of both a disk, and main computer memory are required. The lack of the main memory, of course, reduces data processing speed. Besides, for such models complexity of realization of DBMS is characteristic.

The user has opportunity to change attributes of all data in the field which meet certain requirements. For example, in a numerical field it is possible to allocate with a certain color of value, it is more than set.

Each object of Paradox comprises the menu. For the majority of objects of Paradox - tables, forms, inquiries is a menu contains teams (such as View, Design, Run). In case of constructional objects this menu provides a choice of properties of this object (for example, color, a format of representation of numbers or style of display the text. The user gets access to this menu, inspecting object. This opportunity is inherent in Paradox for Windows, Quattro Pro for Windows and other objects of Borland firm and "inspector Objekta" is called.