WorldCat Identities

Garcia-Molina, Hector

Overview
Works: 165 works in 311 publications in 1 language and 1,976 library holdings
Genres: Conference papers and proceedings 
Roles: Author, Thesis advisor, Editor
Publication Timeline
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Most widely held works by Hector Garcia-Molina
Database systems : the complete book by Hector Garcia-Molina( Book )

54 editions published between 2001 and 2014 in English and held by 797 WorldCat member libraries worldwide

Database Systems: The Complete Book is ideal for Database Systems and Database Design and Application courses offered at the junior, senior and graduate levels in Computer Science departments. A basic understanding of algebraic expressions and laws, logic, basic data structure, OOP concepts, and programming environments is implied
Database system implementation by Hector Garcia-Molina( Book )

14 editions published between 2000 and 2006 in English and held by 300 WorldCat member libraries worldwide

Second Workshop on the Management of Replicated Data, November 12-13, 1992, Monterey, California by Workshop on the Management of Replicated Data( )

4 editions published in 1992 in English and held by 255 WorldCat member libraries worldwide

Performance of update algorithms for replicated data by Hector Garcia-Molina( Book )

8 editions published in 1981 in English and held by 127 WorldCat member libraries worldwide

Proceedings of the 1990 ACM SIGMOD International Conference on Management of Data : May 23-25, 1990, Atlantic City, N.J. by ACM-Sigmod International Conference on Management of Data( Book )

8 editions published between 1989 and 1990 in English and held by 99 WorldCat member libraries worldwide

Overview of multidatabase transaction management by Y Breitbart( Book )

4 editions published in 1992 in English and held by 14 WorldCat member libraries worldwide

Abstract: "A multidatabase system (MDBS) is a facility that allows users access to data located in multiple autonomous database management systems (DBMSs). In such a system, global transactions are executed under the control of the MDBS. Independently, local transactions are executed under the control of the local DBMSs. Each local DBMS integrated by the MDBS may employ a different transaction management scheme. In addition, each local DBMS has complete control over all transactions (global and local) executing at its site, including the ability to abort at any point any of the transactions executing at its site
Performance of update algorithms for replicated data in a distributed database by Hector Garcia-Molina( Book )

12 editions published between 1979 and 1981 in English and held by 14 WorldCat member libraries worldwide

In this thesis we study the performance of update algorithms for replicated data in a distributed database. In doing so, we also investigate several other related issues. We start by presenting a simple model of a distributed database which is suitable for studying updates and concurrency control. We also develop a performance model and a set of parameters which represent the most important performance features of a distributed database. The distributed database models are used to study the performance of update algorithms for replicated data. This is done in two steps. First the algorithms are analyzed in the case of completely replicated databases in a no failure, update only environment. Then, the restrictions that we made are eliminated one at a time, and the impact on the system performance of doing this is evaluated. For the first step, we develop a new technique for analyzing the performance of update algorithms. This iterative technique is based on queueing theory. Several well known update algorithms are analyzed using this technique. The performance results are verified through detailed simulations of the algorithms. The results show that centralized control algorithms nearly always perform better than the more popular distributed control algorithms
Performance of inverted indices in distributed text document retrieval systems by Anthony Slavko Tomasic( Book )

3 editions published in 1992 in English and held by 13 WorldCat member libraries worldwide

Abstract: "The performance of distributed text document retrieval systems is strongly influenced by the organization of the inverted index. This paper compares the performance impact on query processing of various physical organizations for inverted lists. We present a new probalistic model of the database and queries. Simulation experiments determine which variables most strongly influence response time and throughput. This leads to a set of design trade-offs over a wide range of hardware configurations and new parallel query processing strategies."
Aggressive transmissions over redundant paths for time critical messages by Benjamin Chi-Ming Kao( Book )

3 editions published in 1992 in English and held by 13 WorldCat member libraries worldwide

Abstract: "Fault-tolerant computer systems have redundant paths connecting their components. Given these paths, it is possible to use aggressive techniques to reduce the average value and variability of the response time for critical messages. One technique is to send a copy of a packet over an alternate path before it is know if the first copy failed or was delayed. A second technique is to split a single stream of packets over multiple paths. We analyze both approaches and show that they can provide significant improvements over conventional, conservative mechanisms."
Index structures for selective dissemination of information by Tak W Yan( Book )

3 editions published in 1992 in English and held by 10 WorldCat member libraries worldwide

In this paper, we propose several index structures for standing orders and algorithms that efficiently match documents against large number [sic] of orders. We also present analysis and simulations results to compare their performance under different scenarios."
International Conference on Management of Data, 1990: Conference Proceedings, Held in Atlantic City, NJ, May 23-25, 1990 by SIGMOD'90( )

2 editions published in 1990 in English and held by 9 WorldCat member libraries worldwide

Real-time communication over multiple standard networks by Benjamin Chi-Ming Kao( Book )

3 editions published in 1992 in English and held by 9 WorldCat member libraries worldwide

Abstract: "In this paper we consider systems with redundant communication paths, and show how applications can exploit the redundancy to improve real-time communications. We consider two policies, one that evenly distributes load, and one that partitions load according to packet slackness. We evaluate the effectiveness of these policies through analysis and simulation."
Caching and database scaling in distributed shared-nothing information retrieval systems by Anthony Tomasic( Book )

3 editions published in 1992 in English and held by 9 WorldCat member libraries worldwide

The second way determines the optimal number of hosts given a fixed database size."
Deadline assignment in a distributed soft real-time system by Benjamin Chi-Ming Kao( Book )

3 editions published in 1992 in English and held by 9 WorldCat member libraries worldwide

Abstract: "In a distributed environment, tasks often have processing demands on multiple different sites. A distributed task is usually divided up into several subtasks, each one to be executed at some site in order. In a real-time system, an overall deadline is usually specified by an application designer indicating when a distributed task is to be finished. However, the problem of how a global deadline is automatically translated to the deadline of each individual subtask has not been well studied. This paper examines (through simulations) four strategies for subtask deadline assignment in a distributed soft real-time environment."
Index structures for information filtering under the vector space model by T. W Yan( Book )

4 editions published in 1993 in English and held by 8 WorldCat member libraries worldwide

We apply the idea of the standard inverted index to index user profiles. We devise an alternative to the standard inverted index, in which we, instead of indexing every term in a profile, select only the significant ones to index. We evaluate their performance and show that the indexing methods require orders of magnitude fewer I/Os to process a document than when no index is used. We also show that the proposed alternative performs better in terms of I/O and CPU processing time in many cases."
Subtask deadline assignment for complex distributed soft real- time tasks by Benjamin Chi-Ming Kao( Book )

3 editions published in 1993 in English and held by 8 WorldCat member libraries worldwide

Abstract: "Complex distributed tasks often involve parallel execution of subtasks at different nodes. To meet the deadline of a global task, all of its parallel subtasks have to be finished on time. Comparing to a local task (which involves execution at only one node), a global task may have a much harder time making its deadline because it is fairly likely that at least one of its subtasks run into an overloaded node. Another problem with complex distributed tasks occurs when a global task consists of a number of serially executing subtasks. In this case, we have the problem of dividing up the end-to-end deadline of the global task and assigning them to the intermediate subtasks. In this paper, we study both of these problems. Different algorithms for assigning deadlines to subtasks are presented and evaluated."
Coordinating multi-transaction activities by Hector Garcia-Molina( Book )

4 editions published between 1990 and 1991 in English and held by 8 WorldCat member libraries worldwide

Abstract: "Data processing applications must often execute collections of related transactions. We propose a model for structuring and coordinating these multitransaction activities. The model includes mechanisms for communication between transactions, for compensating transactions after an activity has failed, for dynamic creation and binding of activities, and for checkpointing the progress of an activity."
Read-only transactions in a distributed database by Hector Garcia-Molina( Book )

7 editions published in 1980 in English and Undetermined and held by 8 WorldCat member libraries worldwide

A read-only transaction or query is a transaction which does not modify any data. Read-only transactions could be processed with general transaction processing algorithms, but in many cases it is more efficient to process read-only transactions with special algorithms which take advantage of the knowledge that the transaction only reads. This paper defines the various consistency and currency requirements that read-only transactions may have. The processing of the different classes of read-only transactions in a distributed database is discussed. The concept of R insularity is introduced to characterize both the read-only and update algorithms. Several simple update and read-only transaction processing algorithms are presented to illustrate how the query requirements and the update algorithms affect the read-only transaction processing algorithms. (Author)
Altruistic locking by Kenneth Salem( Book )

2 editions published between 1987 and 1990 in English and held by 8 WorldCat member libraries worldwide

Abstract: "Long lived transactions (LLTs) hold on to database resources for relatively long periods of time, significantly delaying the completion of shorter and more common transactions. To alleviate this problems [sic] we propose an extension to two-phase locking, called altruistic locking, whereby LLTs can release their locks early. Transactions that access this released data are said to run in the wake of the LLT and must follow special locking rules. Altruistic locking guarantees serializability and does not a priori specify an order in which database objects must be accessed."
Boolean query mapping across heterogeneous information sources : extended version by Kevin Chen-Chuan Chang( Book )

2 editions published in 1997 in English and held by 8 WorldCat member libraries worldwide

Abstract: "Searching over heterogeneous information sources is difficult because of the non-uniform query languages. Our approach is to allow a user to compose Boolean queries in one rich front-end language. For each user query and target source, we transform the user query into a subsuming query that can be supported by the source but that may return extra documents. The results are then processed by a filter query to yield the correct final result. In this paper we introduce the architecture and associated algorithms for generating the supported subsuming queries and filters. We show that generated subsuming queries return a minimal number of documents; we also discuss how minimal cost filters can be obtained. We have implemented prototype versions of these algorithms and demonstrated them on heterogeneous Boolean systems."
 
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Database systems : the complete book
Alternative Names
García-Molina, Héctor 1954-

Héctor García

Héctor García-Molina informaticus uit Mexico

Héctor García Molina meksikansk informatiker

Héctor García-Molina Mexican computer scientist

Héctor García-Molina US-amerikanischer Informatiker

Molina, Hector Garcia-.

Molina, Hector Garcia- 1954-

Гарсиа Г.

Гарсиа-Молина, Гектор

Гектор Гарсия-Молина учёный-информатик

Молина Г.

هيكتور غارسيا

가르시아-모리나, 헥터

Languages
English (145)

Covers
Database system implementation