Database Management
Reference Manual
Introduction to Database Concepts
:
Database Sessions
: Sessions
Sessions
When a savework is made a new session will be created on the database. The changed data will always be written to the end of the file. This represents the 'delta' from the previous session. Details such as date, user, session description are stored as part of the session data. There is always a pointer from the database header to the last session on the database.
Internally there is a linked list between sessions. It is worth reiterating that once a session is written, it will never be changed. Thus if a user is looking at session 19, then his view of the data will never change in any way regardless of any sessions created by other users. If you do want to see the changes made by others then you must do a 'Getwork'. 'Getwork' will always reposition you to view the latest session. Thus in the above example if a user originally looking at session 19 did a Getwork then he would now be looking at session 39.
1974 to current year.
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