| Query Name | RDQL | Triple | SeRQL | Versa | N3 | RQL | RDFQL | RxPath |
|---|---|---|---|---|---|---|---|---|
| Path Expression | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Optional Path | No | No | Yes | Yes | No | Restricted | Yes | Restricted |
| Union | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Difference | No | No | Yes | Restricted | No | Yes | Yes | Yes |
| Quantification | No | Restricted | Yes | No | No | Yes | Yes | No |
| Aggregation | No | No | No | Yes | Yes | Yes | Yes | Yes |
| Recursion | No | Yes | No | Yes | Yes | No | Yes | Yes |
| Reification | Restricted | Restricted | Yes | Restricted | No | Restricted | Yes | ??? |
| Collection and Containers | Restricted | Restricted | Restricted | Restricted | Restricted | Restricted | Restricted | Yes |
| Namespace | Restricted | No | Yes | No | Yes | Yes | Yes | Yes |
| Language | No | No | Yes | No | No | No | Yes | Yes |
| Lexical Space | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Value Space | Restricted | No | Yes | No | No | Yes | Yes | Yes |
| Entailment | Restricted | Restricted | Yes | No | Restricted | Yes | Yes | No |
1 Path Expression
Return the names of the authors of
publication X.
2 Optional Path
Return the name and, if known, the
e-mail of the author of publication X.
3 union
Return the labels of all topics that and (union)
the titles of all publications.
4 difference
Return the labels of all topics that are not
titles of publications.
5 Quantification
Return the persons who are authors of
all publications.
6 Aggregation
Count the number of authors of a
publication.
7 Recursion
Return all subtopics of topic "Information
Systems", recursively.
8 Reification
Return the person who has classified the
publication X.
9 Collections and Containers
Return the first author
of Publication X.
10 Namespace
Return all resources whose namespace
starts with "http://www.aifb.uni-karlsruhe.de/".
11 Language
Return the German label of the topic whose
English label is "Database Management".
12 Lexical Space
Return all publications where the page
number is the lexical value '08'.
13 Value Space
Return all publications where the page
number is the integer value 8.
14 Entailment
Return all instances of that are members
of the class Publication.
2005-04-11 (this version): Updated SeRQL queries