August 1999
Intermediate to advanced
378 pages
11h 44m
English
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Access Control
Each user of an ACAP system has specific rights to the data stored on it. These rights are also called permissions or privileges. They define whether the user is allowed to read or write the data and whether the user can change the rights of others. Rights can be finely controlled: datasets and even attributes within an entry can have rights attached to them. As with other ACAP features, rights may be inherited from parent datasets.
Rights are stored on an ACAP server in Access Control Lists (ACLs). ACLs are stored as an attribute in the particular entry for which data is being restricted.
Rights for attributes are given as a list of values. The following characters are used to identify the rights for an attribute:
- x
Special search (see the description that follows)
- r
Read
- w
Write (change existing entries)
- i
Insert (write new entries)
- a
Administer (change rights)
Search rights and read rights are complementary but a bit confusing. Search rights give a user the ability to compare the value of one attribute or dataset with another. Read rights allow a user to search datasets with the SEARCH command.
ACAP’s SEARCH command is very powerful, as we shall see. The power of it becomes apparent when someone does a search like, “Give me contact information for all people who are in my address book who have email addresses in the netscape.com domain.” That type of complex search, which includes a comparison, takes search rights. A simple search, such as “Give me contact information for all ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.