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477
The SAMOS Active DBMS Prototype
, 1994
"... We describe SAMOS, an active object-oriented database management system prototype. SAMOS offers a powerful rule definition language, including a small yet powerful set of event definition facilities. It is able to detect primitive and composite events automatically and efficiently. Upon event detect ..."
Abstract
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Cited by 13 (0 self)
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detection, SAMOS executes rules attached to the occurred events. 1 Introduction Active database management systems (aDBMSs) [1] have recently found great interest as a topic of database research, and restricted aDBMS-functionality is even offered by some commercial relational systems. An aDBMS implements
Spatio-Temporal Data Types: An Approach to Modeling and Querying Moving Objects in Databases
, 1999
"... Spatio-temporal databases deal with geometries changing over time. In general, geometries cannot only change in discrete steps, but continuously, and we are talking about moving objects. If only the position in space of an object is relevant, then moving point is a basic abstraction; if also the ext ..."
Abstract
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Cited by 167 (37 self)
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is captured by modeling them as abstract data types. Such types can be integrated as base (attribute) data types into relational, object-oriented, or other DBMS data models; they can be implemented as data blades, cartridges, etc. for extensible DBMSs. We expect these spatio-temporal data types to play a
Self-determination and persistence in a real-life setting: Toward a motivational model of high school dropout.
- Journal of Personality and Social Psychology,
, 1997
"... The purpose of this study was to propose and test a motivational model of high school dropout. The model posits that teachers, parents, and the school administration's behaviors toward students influence students' perceptions of competence and autonomy. The less autonomy supportive the so ..."
Abstract
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Cited by 183 (19 self)
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intentions to drop out of high school, which are later implemented, leading to actual dropout behavior. This model was tested with high school students (N = 4,537) by means of a prospective design. Results from analyses of variance and a structural equation modeling analysis (with L1SREL) were found
TriggerMan: An Asynchronous Trigger Processor as an Extension to an Object-Relational DBMS
, 1997
"... This paper describes the architecture of the TriggerMan asynchronous trigger processor. TriggerMan processes triggers after updates have committed in the source database. It is designed to be able to gather updates from a wide variety of sources, including relational databases, object-relational dat ..."
Abstract
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Cited by 16 (2 self)
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, and temporal triggers. It maintains persistent copies of derived data (including materialized views and time series objects) to enable highperformance trigger condition testing. In order to take advantage of an existing database storage manager rather then create a new one, TriggerMan is being implemented
A Framework for Parallel Processing of Aggregate and Scalar Functions in Object-Relational DBMS
- PROC. SIGMOD CONF
, 1997
"... Nowadays parallel object-relational DBMS are envisioned as the next great wave but there is still a lack of efficient implementation concepts for some parts of the proposed functionality. One of the current goals for parallel object-relational DBMS is to move towards higher performance. In our view ..."
Abstract
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Cited by 1 (0 self)
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Nowadays parallel object-relational DBMS are envisioned as the next great wave but there is still a lack of efficient implementation concepts for some parts of the proposed functionality. One of the current goals for parallel object-relational DBMS is to move towards higher performance. In our view
PostgreSQL: The suitable DBMS solution for astronomy and astrophysics
- In ASP Conference Series, 314, ADASS XIII
, 2004
"... Abstract: PostgreSQL, the open-source ORDBMS, is probably one of the best database solutions for astronomy and astrophysics. Compared to several available commercial and non-commercial database engines, it appears to be the most versatile. At present PostgreSQL is being used in several well-known a ..."
Abstract
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Cited by 2 (0 self)
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features making it well-suited for different scientific and technological tasks. A lot of object-relational concepts assisting in modern commercial databases were pioneered in POSTGRES. The main concepts and features of PostgreSQL: !rapidly developing open source freely distributed DBMS !object-relational
TriggerMan: An Asynchronous Trigger Processor as an Extension to an Object-Relational DBMS
- Proc. of the 3rd Int. Workshop on Rules in Databases, Skoevde
, 1997
"... This paper describes the architecture of the TriggerMan asynchronous trigger processor. TriggerMan processes triggers after updates have committed in the source database. It is designed to be able to gather updates from a wide variety of sources, including relational databases, object-relational dat ..."
Abstract
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, and temporal triggers. It maintains persistent copies of derived data (including materialized views and time series objects) to enable highperformance trigger condition testing. In order to take advantage of an existing database storage manager rather then create a new one, TriggerMan is being implemented
Whom You Know Matters: Venture Capital Networks and Investment Performance,
- Journal of Finance
, 2007
"... Abstract Many financial markets are characterized by strong relationships and networks, rather than arm's-length, spot-market transactions. We examine the performance consequences of this organizational choice in the context of relationships established when VCs syndicate portfolio company inv ..."
Abstract
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Cited by 138 (8 self)
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. This will prove to be true throughout our analysis, suggesting that indirect relationships (those requiring intermediation) play a lesser role in the venture capital market. Similarly, outdegree has a relatively small effect economically, which is consistent with the view that this measure captures a VC firm
On-Line Warehouse View Maintenance
, 1997
"... Data warehouses store materialized views over base data from external sources. Clients typically perform complex read-only queries on the views. The views are refreshed periodically by maintenance transactions, which propagate large bat ch updates from the base tables. In current warehousing systems ..."
Abstract
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Cited by 59 (0 self)
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, no locking is required and serializability is guaranteed. We present our algorithm, explain its relationship to other multi-version concurrency control algorithms, and describe how it can be implemented on top of a conventional relational DBMS using a query rewrite approach.
Object Persistency, View Maintenance And Query Optimization In Osiris, A Dl-Like Oo-Dbms
"... : The Osiris system implements a data model which was originally conceived for view management in a database perspective. Although this data model was designed independently from the objectorientation and from the current of terminological logics, it present similarities with both but also important ..."
Abstract
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: The Osiris system implements a data model which was originally conceived for view management in a database perspective. Although this data model was designed independently from the objectorientation and from the current of terminological logics, it present similarities with both but also
Results 1 - 10
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477
