Terms and Definitions

1. Schema

   • Set of rules that describes the nature of data is stored

   • Helps maintain consistency and quality data

   • Reduces duplication of data

   • Object class attribute determines schema rules the entry must follow

   • Schema contains the following,

     • Required attributes

     • Allowed attributes

     • The method to compare attributes

     • Limit what the attribute can store, that is, restrict to integer

     • Restrict what information is stored, that is, stops duplication

2. Attribute Abbreviation

   • User id : uid

   • Common Name ; cn

   • Surname : sn

   • Location : l

   • Organizational Unit : ou

   • Organization : o

   • Domain Component : dc

   • State : st

   • Country : c

   • Street address : street

3. Search Filters

   • Criteria for attributes that must satisfy for entry on return

   • Base dn = base object entry search relative to

   • Prefix notation

   • Standards

     • LDAP String Representation of Search Filters

     • LDAPv3 Search Filters

   • Operators

     • AND : &

     • OR : |

     • NOT : !

     • Approximately equal : ~=

     • Greater than or equal : >=

     • Less than or equal : <=

     • Any : *

   • Example,

     • (objectclass=posixAccount)

     • (cn=Mickey M*)

     • (|(uid=fred)(uid=bill))

     • (&(|(uid=jack)(uid=jill)(objectclass=posixAccount))