2009 |
129 | EE | George H. L. Fletcher,
Jan Van den Bussche,
Dirk Van Gucht,
Stijn Vansummeren:
Towards a theory of search queries.
ICDT 2009: 201-211 |
2008 |
128 | EE | Natalia Kwasnikowska,
Jan Van den Bussche:
Mapping the NRC Dataflow Model to the Open Provenance Model.
IPAW 2008: 3-16 |
127 | EE | Jan Hidders,
Natalia Kwasnikowska,
Jacek Sroka,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
DFL: A dataflow language based on Petri nets and nested relational calculus.
Inf. Syst. 33(3): 261-284 (2008) |
126 | EE | Stefan Raeymaekers,
Maurice Bruynooghe,
Jan Van den Bussche:
Learning ( k , l )-contextual tree languages for information extraction from web pages.
Machine Learning 71(2-3): 155-183 (2008) |
2007 |
125 | EE | Kerstin Koch,
Stefan Schönauer,
Ivy Jansen,
Jan Van den Bussche,
Tomasz Burzykowski:
Finding Clusters of Positive and Negative Coregulated Genes in Gene Expression Data.
BIBE 2007: 93-99 |
124 | EE | Floris Geerts,
Jan Van den Bussche:
Relational Completeness of Query Languages for Annotated Databases.
DBPL 2007: 127-137 |
123 | EE | Yuri Gurevich,
Dirk Leinders,
Jan Van den Bussche:
A Theory of Stream Queries.
DBPL 2007: 153-168 |
122 | EE | Jan Hidders,
Natalia Kwasnikowska,
Jacek Sroka,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
A Formal Model of Dataflow Repositories.
DILS 2007: 105-121 |
121 | EE | Martin Grohe,
Yuri Gurevich,
Dirk Leinders,
Nicole Schweikardt,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
Database Query Processing Using Finite Cursor Machines.
ICDT 2007: 284-298 |
120 | EE | Jan Van den Bussche,
Dirk Van Gucht,
Stijn Vansummeren:
A crash course on database queries.
PODS 2007: 143-154 |
119 | EE | Jan Van den Bussche,
Stijn Vansummeren:
Polymorphic type inference for the named nested relational calculus.
ACM Trans. Comput. Log. 9(1): (2007) |
118 | EE | Jan Van den Bussche:
Introduction to the PODS 2006 special section.
ACM Trans. Database Syst. 32(4): (2007) |
117 | EE | Wim Janssen,
Alexandr Korlyukov,
Jan Van den Bussche:
On the tree-transformation power of XSLT.
Acta Inf. 43(6): 371-393 (2007) |
116 | EE | Jan Van den Bussche:
Mining for trees in a graph is NP-complete
CoRR abs/0709.4655: (2007) |
115 | EE | Dirk Leinders,
Jan Van den Bussche:
On the complexity of division and set joins in the relational algebra.
J. Comput. Syst. Sci. 73(4): 538-549 (2007) |
114 | EE | Jan Van den Bussche,
Dirk Van Gucht,
Stijn Vansummeren:
Well-definedness and semantic type-checking for the nested relational calculus.
Theor. Comput. Sci. 371(3): 183-199 (2007) |
2006 |
113 | EE | Jan Van den Bussche:
The Semijoin Algebra.
FoIKS 2006: 1 |
112 | EE | Floris Geerts,
Peter Z. Revesz,
Jan Van den Bussche:
On-line maintenance of simplified weighted graphs for efficient distance queries.
GIS 2006: 203-210 |
111 | EE | Eveline Hoekx,
Jan Van den Bussche:
Mining for Tree-Query Associations in a Graph.
ICDM 2006: 254-264 |
110 | EE | Wim Janssen,
Alexandr Korlyukov,
Jan Van den Bussche:
On the tree-transformation power of XSLT
CoRR abs/cs/0603028: (2006) |
109 | EE | Floris Geerts,
Peter Z. Revesz,
Jan Van den Bussche:
On-line topological simplification of weighted graphs
CoRR abs/cs/0608091: (2006) |
108 | EE | Raymond Kosala,
Hendrik Blockeel,
Maurice Bruynooghe,
Jan Van den Bussche:
Information extraction from structured documents using k-testable tree automaton inference.
Data Knowl. Eng. 58(2): 129-158 (2006) |
107 | EE | Michael Benedikt,
Bart Kuijpers,
Christof Löding,
Jan Van den Bussche,
Thomas Wilke:
A characterization of first-order topological properties of planar spatial data.
J. ACM 53(2): 273-305 (2006) |
106 | EE | Floris Geerts,
Bart Kuijpers,
Jan Van den Bussche:
Linearization and Completeness Results for Terminating Transitive Closure Queries on Spatial Databases.
SIAM J. Comput. 35(6): 1386-1439 (2006) |
105 | EE | Jan Van den Bussche:
Database theory column: report on PODS 2006.
SIGACT News 37(4): 56-57 (2006) |
2005 |
104 | | Bart Goethals,
Eveline Hoekx,
Jan Van den Bussche:
Mining Tree Queries in a Graph.
BNAIC 2005: 345-346 |
103 | EE | Stefan Raeymaekers,
Maurice Bruynooghe,
Jan Van den Bussche:
Learning (k, l)-Contextual Tree Languages for Information Extraction.
ECML 2005: 305-316 |
102 | EE | Jan Van den Bussche,
Dirk Van Gucht,
Stijn Vansummeren:
Well-Definedness and Semantic Type-Checking in the Nested Relational Calculus and XQuery Extended Abstract.
ICDT 2005: 99-113 |
101 | EE | Bart Goethals,
Eveline Hoekx,
Jan Van den Bussche:
Mining tree queries in a graph.
KDD 2005: 61-69 |
100 | EE | Jan Hidders,
Natalia Kwasnikowska,
Jacek Sroka,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
Petri Net + Nested Relational Calculus = Dataflow.
OTM Conferences (1) 2005: 220-237 |
99 | EE | Dirk Leinders,
Jan Van den Bussche:
On the complexity of division and set joins in the relational algebra.
PODS 2005: 76-83 |
98 | EE | Floris Geerts,
Bart Goethals,
Jan Van den Bussche:
Tight upper bounds on the number of candidate patterns.
ACM Trans. Database Syst. 30(2): 333-363 (2005) |
97 | EE | Floris Geerts,
Lieven Smits,
Jan Van den Bussche:
N-dimensional versus (N-1)-dimensional connectivity testing of first-order queries to semi-algebraic sets.
Acta Inf. 42(1): 43-56 (2005) |
96 | | Jan Van den Bussche:
First-order Topology Properties.
Bulletin of the EATCS 87: 155-164 (2005) |
95 | EE | Jan Van den Bussche,
Stijn Vansummeren,
Gottfried Vossen:
Towards practical meta-querying.
Inf. Syst. 30(4): 317-332 (2005) |
94 | EE | Dirk Leinders,
Maarten Marx,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
The Semijoin Algebra and the Guarded Fragment.
Journal of Logic, Language and Information 14(3): 331-343 (2005) |
2004 |
93 | EE | Jan Van den Bussche:
Finite Cursor Machines in Database Query Processing.
Abstract State Machines 2004: 61 |
92 | EE | Jan Van den Bussche,
Stijn Vansummeren,
Gottfried Vossen:
Meta-SQL: Towards Practical Meta-Querying.
EDBT 2004: 823-825 |
91 | EE | Michael Benedikt,
Christof Löding,
Jan Van den Bussche,
Thomas Wilke:
A Characterization of First-Order Topological Properties of Planar Spatial Data.
PODS 2004: 107-114 |
90 | EE | Geert Jan Bex,
Frank Neven,
Jan Van den Bussche:
DTDs versus XML Schema: A Practical Study.
WebDB 2004: 79-84 |
89 | EE | Jan Van den Bussche,
Dirk Van Gucht,
Stijn Vansummeren:
Well-Definedness and Semantic Type-Checking in the Nested Relational Calculus and XQuery
CoRR cs.DB/0406060: (2004) |
88 | EE | Dirk Leinders,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
The semijoin algebra and the guarded fragment
CoRR cs.DB/0407007: (2004) |
87 | EE | Dirk Leinders,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
On the expressive power of semijoin queries.
Inf. Process. Lett. 91(2): 93-98 (2004) |
86 | EE | Joachim Biskup,
Jan Paredaens,
Thomas Schwentick,
Jan Van den Bussche:
Solving Equations in the Relational Algebra.
SIAM J. Comput. 33(5): 1052-1066 (2004) |
2003 |
85 | EE | Michal Bielecki,
Jan Van den Bussche:
Database Interrogation Using Conjunctive Queries.
ICDT 2003: 259-269 |
84 | | Raymond Kosala,
Maurice Bruynooghe,
Jan Van den Bussche,
Hendrik Blockeel:
Information Extraction from Web Documents Based on Local Unranked Tree Automaton Inference.
IJCAI 2003: 403-408 |
83 | EE | Dirk Leinders,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
On the expressive power of semijoin queries
CoRR cs.DB/0308014: (2003) |
82 | EE | Floris Geerts,
Lieven Smits,
Jan Van den Bussche:
Two- versus three-dimensional connectivity testing of first-order queries to semi-algebraic sets
CoRR cs.LO/0308001: (2003) |
2002 |
81 | EE | Michal Bielecki,
Jan Hidders,
Jan Paredaens,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
Navigating with a Browser.
ICALP 2002: 764-775 |
80 | EE | Raymond Kosala,
Jan Van den Bussche,
Maurice Bruynooghe,
Hendrik Blockeel:
Information Extraction in Structured Documents Using Tree Automata Induction.
PKDD 2002: 299-310 |
79 | EE | Marc Spielmann,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
Distributed Computation of Web Queries Using Automata.
PODS 2002: 97-108 |
78 | EE | Bart Goethals,
Jan Van den Bussche:
Relational Association Rules: Getting WARMeR.
Pattern Detection and Discovery 2002: 125-139 |
77 | EE | Jan Van den Bussche,
Stijn Vansummeren,
Gottfried Vossen:
Towards practical meta-querying
CoRR cs.DB/0202037: (2002) |
76 | EE | Bart Goethals,
Jan Van den Bussche:
Relational Association Rules: getting WARMeR
CoRR cs.DB/0206023: (2002) |
75 | EE | Andreas Blass,
Yuri Gurevich,
Jan Van den Bussche:
Abstract State Machines and Computationally Complete Query Languages.
Inf. Comput. 174(1): 20-36 (2002) |
74 | EE | Frank Neven,
Jan Van den Bussche:
Expressiveness of structured document query languages based on attribute grammars.
J. ACM 49(1): 56-100 (2002) |
73 | EE | Jan Van den Bussche,
Emmanuel Waller:
Polymorphic Type Inference for the Relational Algebra.
J. Comput. Syst. Sci. 64(3): 694-718 (2002) |
2001 |
72 | | Jan Van den Bussche,
Victor Vianu:
Database Theory - ICDT 2001, 8th International Conference, London, UK, January 4-6, 2001, Proceedings.
Springer 2001 |
71 | EE | Jan Van den Bussche:
Applications of Alfred Tarski's Ideas in Database Theory.
CSL 2001: 20-37 |
70 | EE | Floris Geerts,
Bart Goethals,
Jan Van den Bussche:
A Tight Upper Bound on the Number of Candidate Patterns.
ICDM 2001: 155-162 |
69 | EE | Marc Andries,
Luca Cabibbo,
Jan Paredaens,
Jan Van den Bussche:
Applying an update method to a set of receivers.
ACM Trans. Database Syst. 26(1): 1-40 (2001) |
68 | EE | Floris Geerts,
Bart Goethals,
Jan Van den Bussche:
A Tight Upper Bound on the Number of Candidate Patterns
CoRR cs.DB/0112007: (2001) |
67 | EE | Bart Goethals,
Jan Van den Bussche:
Interactive Constrained Association Rule Mining
CoRR cs.DB/0112011: (2001) |
66 | EE | Joachim Biskup,
Jan Paredaens,
Thomas Schwentick,
Jan Van den Bussche:
Solving equations in the relational algebra
CoRR cs.LO/0106034: (2001) |
65 | EE | Jan Van den Bussche,
Emmanuel Waller:
Polymorphic type inference for the relational algebra
CoRR cs.LO/0106035: (2001) |
64 | | Frank Neven,
Martin Otto,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
Adding For-Loops to First-Order Logic.
Inf. Comput. 168(2): 156-186 (2001) |
63 | EE | Jan Van den Bussche:
Rewriting queries using views over monadic database schemas.
Inf. Process. Lett. 79(3): 111-114 (2001) |
62 | EE | Jan Van den Bussche:
Simulation of the nested relational algebra by the flat relational algebra, with an application to the complexity of evaluating powerset algebra expressions.
Theor. Comput. Sci. 254(1-2): 363-377 (2001) |
2000 |
61 | EE | Andreas Blass,
Yuri Gurevich,
Jan Van den Bussche:
Abstract State Machines and Computationally Complete Query Languages.
Abstract State Machines 2000: 22-33 |
60 | | Jan Van den Bussche:
Constraint Databases, Queries, and Query Languages.
Constraint Databases 2000: 20-54 |
59 | EE | Bart Goethals,
Jan Van den Bussche:
On Supporting Interactive Association Rule Mining.
DaWaK 2000: 307-316 |
58 | | Bart Kuijpers,
Jan Paredaens,
Jan Van den Bussche:
Topological Elementary Equivalence of Closed Semi-Algebraic Sets in The Real Plane.
J. Symb. Log. 65(4): 1530-1555 (2000) |
57 | EE | Jan Van den Bussche:
Constraint databases: A tutorial introduction.
SIGMOD Record 29(3): 44-51 (2000) |
1999 |
56 | EE | Bart Goethals,
Jan Van den Bussche:
A priori versus a posteriori filtering of association rules.
1999 ACM SIGMOD Workshop on Research Issues in Data Mining and Knowledge Discovery 1999 |
55 | EE | Bart Kuijpers,
Jan Van den Bussche:
On Capturing First-Order Topological Properties of Planar Spatial Databases.
ICDT 1999: 187-198 |
54 | EE | Frank Neven,
Martin Otto,
Jerzy Tyszkiewicz,
Jan Van den Bussche:
Adding For-Loops to First-Order Logic.
ICDT 1999: 58-69 |
53 | EE | Jan Van den Bussche,
Emmanuel Waller:
Type Inference in the Polymorphic Relational Algebra.
PODS 1999: 80-90 |
52 | EE | Frank Neven,
Jan Van den Bussche,
Dirk Van Gucht,
Gottfried Vossen:
Typed Query Languages for Databases Containing Queries.
Inf. Syst. 24(7): 569-595 (1999) |
51 | | Serge Abiteboul,
Laurent Herr,
Jan Van den Bussche:
Temporal Connectives Versus Explicit Timestamps to Query Temporal Databases.
J. Comput. Syst. Sci. 58(1): 54-68 (1999) |
50 | | Marc Gyssens,
Jan Van den Bussche,
Dirk Van Gucht:
Complete Geometric Query Languages.
J. Comput. Syst. Sci. 58(3): 483-511 (1999) |
49 | EE | Kenneth A. Ross,
Surajit Chaudhuri,
Gösta Grahne,
H. V. Jagadish,
Jan Van den Bussche,
Moshe Y. Vardi:
Reminiscences on Influential Papers.
SIGMOD Record 28(4): 39-41 (1999) |
1998 |
48 | | Jan Van den Bussche,
Emmanuel Waller:
Methods and views.
BDA 1998 |
47 | | Floris Geerts,
Bart Kuijpers,
Jan Van den Bussche:
Topological Canonization of Planar Spatial Data and Its Incremental Maintenance.
FMLDO 1998: 55-67 |
46 | EE | Frank Neven,
Jan Van den Bussche:
Expressiveness of Structured Document Query Languages Based on Attribute Grammars.
PODS 1998: 11-17 |
45 | EE | Frank Neven,
Jan Van den Bussche,
Dirk Van Gucht,
Gottfried Vossen:
Typed Query Languages for Databases Containing Queries.
PODS 1998: 189-196 |
44 | EE | Jan Van den Bussche,
Luca Cabibbo:
Converting Untyped Formulas to Typed Ones.
Acta Inf. 35(8): 637-643 (1998) |
43 | EE | Jan Paredaens,
Jan Van den Bussche,
Dirk Van Gucht:
First-Order Queries on Finite Structures Over the Reals.
SIAM J. Comput. 27(6): 1747-1763 (1998) |
42 | | Marc Gemis,
Jan Paredaens,
Peter Peelman,
Jan Van den Bussche:
Expressiveness and Complexity of Generic Graph Machines.
Theory Comput. Syst. 31(3): 231-249 (1998) |
1997 |
41 | | Frank Neven,
Jan Van den Bussche:
On Implementing Structured Document Query Facilities on Top of a DOOD.
DOOD 1997: 351-367 |
40 | EE | Bart Kuijpers,
Jan Paredaens,
Jan Van den Bussche:
On Topological Elementary Equivalence of Spatial Databases.
ICDT 1997: 432-446 |
39 | EE | Marc Gyssens,
Jan Van den Bussche,
Dirk Van Gucht:
Complete Geometrical Query Languages.
PODS 1997: 62-67 |
38 | EE | Jan Van den Bussche,
Dirk Van Gucht,
Marc Andries,
Marc Gyssens:
On the completeness of object-creating database transformation languages.
J. ACM 44(2): 272-319 (1997) |
37 | | Jan Van den Bussche,
Dirk Van Gucht:
A Semideterministic Approach to Object Creation and Nondeterminism in Database Queries.
J. Comput. Syst. Sci. 54(1): 34-47 (1997) |
1996 |
36 | | Bart Kuijpers,
Jan Paredaens,
Marc Smits,
Jan Van den Bussche:
Termination Properties of Spatial Datalog Programs.
Logic in Databases 1996: 101-116 |
35 | EE | Serge Abiteboul,
Laurent Herr,
Jan Van den Bussche:
Temporal Versus First-Order Logic to Query Temporal Databases.
PODS 1996: 49-57 |
34 | EE | Martin Otto,
Jan Van den Bussche:
First-Order Queries on Databases Embedded in an Infinite Structure.
Inf. Process. Lett. 60(1): 37-41 (1996) |
33 | | Jan Van den Bussche,
Dirk Van Gucht,
Gottfried Vossen:
Reflective Programming in the Relational Algebra.
J. Comput. Syst. Sci. 52(3): 537-549 (1996) |
1995 |
32 | | Serge Abiteboul,
Jan Van den Bussche:
Deep Equality Revisited.
DOOD 1995: 213-228 |
31 | | Jan Paredaens,
Jan Van den Bussche,
Dirk Van Gucht:
First-order Queries on Finite Structures over the Reals
LICS 1995: 79-87 |
30 | EE | Marc Andries,
Luca Cabibbo,
Jan Paredaens,
Jan Van den Bussche:
Applying an Update Method to a Set of Receivers.
PODS 1995: 208-218 |
29 | EE | Bart Kuijpers,
Jan Paredaens,
Jan Van den Bussche:
Lossless Representation of Topological Spatial Data.
SSD 1995: 1-13 |
28 | | Serge Abiteboul,
Laurent Herr,
Jan Van den Bussche:
Temporal Connectives versus Explicit Timestamps in Temporal Query Languages
Temporal Databases 1995: 43-57 |
27 | | Jan Van den Bussche,
Jan Paredaens:
The Expressive Power of Complex Values in Object-Based Data Models
Inf. Comput. 120(2): 220-236 (1995) |
26 | EE | Jan Van den Bussche,
Dirk Van Gucht:
The Expressive Power of Cardinality-Bounded Set Values in Object-Based Data Models.
Theor. Comput. Sci. 149(1): 49-66 (1995) |
1994 |
25 | | Marc Gyssens,
Jan Van den Bussche,
Dirk Van Gucht:
Expressiveness of Efficient Semi-Deterministic Choice Constructs.
ICALP 1994: 106-117 |
24 | EE | Jan Paredaens,
Jan Van den Bussche,
Dirk Van Gucht:
Towards a Theory of Spatial Database Queries.
PODS 1994: 279-288 |
23 | EE | Marc Gyssens,
Jan Paredaens,
Jan Van den Bussche,
Dirk Van Gucht:
A Graph-Oriented Object Database Model.
IEEE Trans. Knowl. Data Eng. 6(4): 572-586 (1994) |
1993 |
22 | | Jan Van den Bussche,
Gottfried Vossen:
An Extension of Path Expressions to Simplify Navigation in Object-Oriented Queries.
DOOD 1993: 267-282 |
21 | | Marc Gemis,
Jan Paredaens,
Peter Peelman,
Jan Van den Bussche:
A Computational Model for Generic Graph Functions.
Dagstuhl Seminar on Graph Transformations in Computer Science 1993: 170-187 |
20 | EE | Jan Van den Bussche,
Dirk Van Gucht,
Gottfried Vossen:
Reflective Programming in the Relational Algebra.
PODS 1993: 17-25 |
19 | EE | Marc Gemis,
Jan Paredaens,
Inge Thyssens,
Jan Van den Bussche:
GOOD: AGraph-Oriented Object Database System.
SIGMOD Conference 1993: 505-510 |
18 | | Jan Van den Bussche:
On Minimizing the Forall-Not Degree of a Connective-Free Formula.
Acta Inf. 30(5): 489-502 (1993) |
17 | | Jan Van den Bussche:
Complex Object Multi-Level Fixpoint Queries.
Ann. Math. Artif. Intell. 7(1-4): 41-62 (1993) |
16 | | Jan Van den Bussche,
Andreas Heuer:
Using SQL with object-oriented databases.
Inf. Syst. 18(7): 461-487 (1993) |
1992 |
15 | EE | Marc Andries,
Marc Gemis,
Jan Paredaens,
Inge Thyssens,
Jan Van den Bussche:
Concepts for Graph-Oriented Object Manipulation.
EDBT 1992: 21-38 |
14 | | Jan Van den Bussche,
Dirk Van Gucht:
Non-Deterministic Aspects of Object-Creating Database Transformations.
FMLDO 1992: 3-16 |
13 | | Jan Van den Bussche,
Dirk Van Gucht,
Marc Andries,
Marc Gyssens:
On the Completeness of Object-Creating Query Languages (Extended Abstract)
FOCS 1992: 372-379 |
12 | | Marc Andries,
Jan Paredaens,
Jan Van den Bussche:
A Graph- and Object-Oriented Counterpart for SQL.
Future Databases 1992: 276-285 |
11 | EE | Jan Van den Bussche,
Dirk Van Gucht:
A Hierarchy of Faithful Set Creation in Pure OODB's.
ICDT 1992: 326-340 |
10 | EE | Jan Van den Bussche,
Dirk Van Gucht:
Semi-determinism.
PODS 1992: 191-201 |
9 | EE | Jan Paredaens,
Jan Van den Bussche,
Marc Andries,
Marc Gemis,
Marc Gyssens,
Inge Thyssens,
Dirk Van Gucht,
Vijay M. Sarathy,
Lawrence V. Saxton:
An Overview of GOOD.
SIGMOD Record 21(1): 25-31 (1992) |
1991 |
8 | | Jan Van den Bussche:
Evaluation and optimization of complex object selections.
DOOD 1991: 226-243 |
7 | | Jan Van den Bussche:
Active Complex Object Databases (Working Paper).
FMLDO 1991: 103-113 |
6 | EE | Jan Van den Bussche:
Complex Object Multi-Level Fixpoint Queries.
MFDBS 1991: 1-13 |
5 | EE | Jan Van den Bussche,
Jan Paredaens:
The Expressive Power of Structured Values in Pure OODB's.
PODS 1991: 291-299 |
1990 |
4 | | Andreas Heuer,
Jan Van den Bussche:
Using SQL with Object-Oriented Databases (Preliminary Report).
FMLDO 1990: 103-121 |
3 | | Jan Van den Bussche:
A formal basis for extending SQL to object-oriented databases.
Bulletin of the EATCS 40: 207-216 (1990) |
1989 |
2 | | Peter Sander,
Simone Rehm,
Jan Van den Bussche:
Working Group Report: Negation, Functions and Construction in Rule-Based Languages for Complex Objects.
FMLDO 1989: 239-253 |
1 | | Jan Paredaens,
Jan Van den Bussche:
TREES: A Graphical Model for Querying Hierarchical Databases.
FMLDO 1989: 37-54 |