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Sun OpenDS Standard Edition 2.2 Glossary of LDAP and Directory Terminology

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Introduction

Glossary

A

abandon operation

abstract object class

Abstract Syntax Notation One

access control

access control instruction (ACI)

access control rule

access log

account expiration

account lockout

account status notification

account usability control

ACID

add operation

alias

AND search filter

anonymous bind

ANONYMOUS SASL mechanism

approximate index

approximate search filter

ASN.1

assertion value

attribute

attribute description

attribute option

attribute syntax

attribute type

attribute usage

attribute value

attribute value assertion

audit log

authentication

authentication ID

authentication password syntax

authorization

authorization ID

authorization identity control

auxiliary object class

AVA

B

back end

backup

base64 encoding

Basic Encoding Rules

BER

Berkeley DB Java Edition

binary copy

bind operation

C

cancel extended operation

CDDL

certificate

certificate mapper

chaining

changelog

cn=Directory Manager

collective attribute

Common Development and Distribution License

compare operation

connection handler

connection ID

control

CRAM-MD5 SASL mechanism

crypt algorithm

D

database

database cache

debug log

delete operation

deprecated password storage scheme

dereference policy

DIGEST-MD5 SASL mechanism

directory information tree

directory manager

directory server

directory server agent

Directory Services Markup Language

distinguished name

distribution

DIT

DIT content rule

DIT structure rule

DN

DSA

DSA-specific entry

DSE

DSML

DSML gateway

duration

dynamic group

E

entry

entry cache

entry change notification control

entryDN

entry ID

entryUUID

equality index

equality search filter

error log

export

extended operation

extensible match index

extensible match search filter

EXTERNAL SASL mechanism

F

failover algorithm

false filter

G

generalized time

get effective rights control

global index

global index catalog

greater than or equal to search filter

group

GSSAPI SASL mechanism

I

ID list

id2entry database

identity mapper

idle account lockout

in-core restart

index

index entry limit

intermediate response

Internet Draft

J

Java Management Extensions

Java Web Start

K

key manager provider

L

last login time

lastmod plug-in

LDAP assertion control

ldapcompare tool

LDAP Data Interchange Format

ldapdelete tool

LDAP false filter

LDAP intermediate response

LDAP modify DN operation

LDAP modify operation

ldapmodify Tool

LDAP message

LDAP no-op control

LDAP post-read control

LDAP pre-read control

LDAP result

LDAPS

LDAP search filter

ldapsearch tool

LDAP Subentry

LDAP URL

LDIF export

LDIF import

leaf entry

less than or equal to search filter

lexico algorithm

Lightweight Directory Access Protocol

load balancing

lookthrough limit

M

MakeLDIF tool

manage DSA IT control

matched DN

matched values control

matching rule

matching rule use

MD5

message

message ID

modification

modification type

modify DN operation

modify operation

monitor entry

N

name form

naming context

network group

non-leaf entry

normalized value

notice of disconnection unsolicited notification

NOT search filter

numeric algorithm

O

object class

object class type

object identifier

operation id

operational attribute

ordering index

OR search filter

P

partition

password

password expiration

password generator

Password Modify extended operation

password policy

password policy control

password reset

password storage scheme

password validator

persistent search control

PLAIN SASL mechanism

plug-in

presence index

presence search filter

privilege

proportional algorithm

protocol data unit

protocol op

proxied authorization control

Q

quality of protection

QuickSetup installer

R

real attributes only control

referential integrity

referral

relative distinguished name

replica

replication

replication repair control

request for comments

restore

result

result code

root DN

root DSE

route

S

salt

saturation algorithm

saturation alert

saturation threshold

schema

schema checking

search attributes

search base DN

search filter

search operation

search result done

search result entry

search result reference

search scope

Secure Hash Algorithm

Secure Sockets Layer

server-side sort control

simple authentication

Simple Authentication and Security Layer

simple paged results control

size limit

smart referral

StartTLS extended operation

static group

structural object class

subentry

subschema subentry

substring assertion

substring index

substring search filter

subtree

subtree delete control

supported control

supported extension

supported feature

synchronization

T

task

time limit

transaction

Transport Security Layer

true filter

trust manager provider

typesOnly flag

U

unbind operation

unindexed search

UNIX crypt algorithm

unsolicited notification

URL

user attribute

V

virtual attribute

virtual attributes only control

virtual directory

virtual list view control

virtual static group

VLV index

W

"Who Am I?" extended operation

work queue

worker thread

workflow

workflow element

writability mode

Abstract Syntax Notation One

Abstract Syntax Notation One (ASN.1) is a mechanism for encoding data in a binary form. It uses a TLV structure, in which each element has a type, length, and value. The type component is a data type that indicates what kind of information is stored in the element and indicates how the value should be encoded. The length component specifies the number of bytes in the value, and the value is the actual data held by the element.

Examples of ASN.1 elements include the following:

Null

Null elements do not hold any value. They are generally used as placeholders when an element is required but no value is needed.

Octet string

Octet string elements hold a set of zero or more octets (bytes) of data. It can be used for holding string or binary data.

Boolean

Boolean elements hold values that represent either true or false.

Integer

Integer elements hold values that represent integer values.

Enumerated

Enumerated elements hold values that represent integer values where each value has a specific meaning.

Sequence

Sequence elements are containers that hold zero or more other ASN.1 elements in a manner where the order of the elements is significant.

Set

Set elements are containers that hold zero or more other ASN.1 elements in a manner where the order of the elements is not significant.

Note that ASN.1 is a general framework for binary encoding, but doesn't actually define how the data should be encoded. That is handled by an encoding rule, and there are a number of different kinds of ASN.1 encoding rules. LDAP uses the Basic Encoding Rules encoding, but other types include Distinguished Encoding Rules (DER), Canonical Encoding Rules (CER), and Packed Encoding Rules (PER).