Z39.50 Target Statistics

Every so often, we probe the targets known to us (currently 928, with a total of 1254 databases) to keep track of their support for different elements of the Z39.50 protocol. The results are displayed below. You can also view the full list of targets and databases.

The targets was last probed Tuesday 05 th. of December 2006 at 18:16 CET.

DISCLAIMER: The systems listed are generally made available without charge for testing or general use. Additional functionality may be available to registered users of each system. The information presented here should not be considered indicative of the general functionality of any given software system or installation. This information is made available for recreational purposes only, and Index Data assumes no responsibility or warranty for its correctness. Use at your own discretion.

The ten most commonly supported Bib-1 Use attributes

#AttributeName# Db
1 4 Title 1190 (95%)
2 21 Subject heading 1157 (92%)
3 1003 Author 1103 (88%)
4 7 ISBN 1102 (88%)
5 8 ISSN 1056 (84%)
6 1016 Any 1024 (82%)
7 5 Title series 928 (74%)
8 1 Personal name 916 (73%)
9 12 Local number 880 (70%)
10 6 Title uniform 832 (66%)

Record syntax support by database

#Record Syntax# Db
1 USmarc 1019 (81%)
2 SUTRS 613 (49%)
3 OPAC 585 (47%)
4 XML 517 (41%)
5 Unimarc 280 (22%)
6 RUSmarc 227 (18%)
7 Danmarc 152 (12%)
8 GRS-1 103 (8%)
9 NoInfo 88 (7%)
10 UKmarc 65 (5%)
11 MAB 30 (2%)
12 Canmarc 25 (2%)
13 Normarc 14 (1%)
14 Ibermarc 14 (1%)
15 Picamarc 10 (1%)

Explain Support

(Of the targets known to us, 45 currently support Explain.)

#Explain Category# Targets
1 TargetInfo 44 (98%)
2 DatabaseInfo 44 (98%)
3 CategoryList 41 (91%)
4 AttributeSetInfo 39 (87%)
5 AttributeDetails 37 (82%)
6 RecordSyntaxInfo 19 (42%)
7 SchemaInfo 12 (27%)
8 TagSetInfo 12 (27%)
9 TermListInfo 4 (9%)
10 TermListDetails 4 (9%)
11 ExtendedServicesInfo 1 (2%)
12 ElementSetDetails 1 (2%)
13 SortDetails 1 (2%)
14 Processing 1 (2%)

Z39.50 Protocol Services Support

Note: We calculate the protocol services support by looking at the options bits as they come back in the Init Response PDU.

#Service# Targets
1 search 928 (100%)
2 present 928 (100%)
3 scan 733 (79%)
4 namedResultSets 655 (71%)
5 delSet 479 (52%)
6 sort 367 (40%)
7 concurrentOperations 290 (31%)
8 extendedServices 286 (31%)
9 resourceCtrl 52 (6%)
10 accessCtrl 50 (5%)
11 resourceReport 47 (5%)
12 triggerResourceCtrl 41 (4%)
13 level-1Segmentation 34 (4%)
14 level-2Segmentation 21 (2%)

Z39.50 Server Atlas

The geographical coordinates for Z39.50 servers plotted on a world atlas.

Z39.50 Server Atlas
Click on the image to see a larger version. This image has been created with a modified version of Ivan Kozik's IP-Atlas.

Top Domains

The number of targets in a particular top domain.

#Top Domain# Targets
1 edu 205 (22%)
2 dk (Denmark) 95 (10%)
3 ru (Russia) 61 (7%)
4 uk (United Kingdom) 58 (6%)
5 ca (Canada) 47 (5%)
6 us (USA) 46 (5%)
7 org 41 (4%)
8 au (Australia) 33 (4%)
9 es (Spain) 24 (3%)
10 it (Itally) 12 (1%)

Implementation

The number of targets with a particular implementation name/id.
Note: Implementation id is weighted highest.

#Implementation name# Targets
1 z39-innopac 247 (27%)
2 Index Data/YAZ Generic Frontend Server 211 (23%)
3 CNIDR zserver 113 (12%)
4 SIRSI CORP 105 (11%)
5 Geac Advance Z39.50 SERVER 28 (3%)
6 Horizon Information Portal Z39.50 Server 22 (2%)
7 RUSLAN Server, Library System RUSLAN 19 (2%)
8 DBC nep 12 (1%)
9 Library.Z 8 (1%)
10 Data Research 8 (1%)

Back to the Z39.50 Target Directory.

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