COMMAND TYPE : HELP
This command inquiries the public data base to retrieve the catalogues available in a computer center. The query can be made selecting catalogues by Name, Band, CDS identifier, type of objects, bibliographic notes and so on. The output can be written on the screen or on a file. The output can be a short list or a full explanation of the catalogues characteristics, included variable list, and the documentation. Moreover this task can be used to verify where the catalogues are stored and if the mount of a tape is required.
When the user works with the DB_INFO command he has to enter commands to use the available options. The first three characters of a command are expressive.
The user can select catalogues for:
When the SELECT command is called a new window is opened on the screen. The user must fill in the appropriate fields of the window to set the search conditions. The key ?, entered in a field, explains the input values allowed in that field.
The user can set flags to have:
The commands: LIST 'namecat' and LIST 'namecat' DOC do not use the flags set with this command because they have a defined output format.
The command can be used in three ways:
|LIST||Lists all selected catalogues|
|LIST 'cat'||Lists 'cat' catalogue (ie. LIST UGC)|
|LIST 'cat' DOC||Lists catalogue documentation (ie. LIST UGC DOC)|
The command can be used in two ways:
|VOC||Lists all the vocabulary|
|VOC 'string'||Types records that contain 'string'|
To have the explanation about a command of DB_INFO