4137 search results - page 297 / 828 » Managing Expressions as Data in Relational Database Systems |
183
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DATESO
2007
15 years 8 months ago
2007
We address a problem of updating XML documents having their XML schema described by a Document Type Definition (DTD) without breaking their validity. We present a way how to expre...
282
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FODO
1998
Springer
15 years 11 months ago
1998
Springer
Abstract. A Conceptual Information System consists of a database together with conceptual hierarchies. The management system TOSCANA visualizes arbitrary combinations of conceptual...
276
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ICDE
2006
IEEE
16 years 8 months ago
2006
IEEE
Scientific research is becoming increasingly relied on collaborative effort among multiple institutions and interdisciplinary consortium, through sharing experiments and data, and...
240
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EDBT
1994
ACM
15 years 10 months ago
1994
ACM
Abstract. Good estimates of join result sizes are critical for query optimization in relational database management systems. We address the problem of incrementally obtaining accur...
152
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PODS
2007
ACM
16 years 6 months ago
2007
ACM
Schema mappings are high-level specifications that describe the relationship between two database schemas. Two operators on schema mappings, namely the composition operator and th...