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Showing 1 to 20 of 65 for “"Database management systems"”.
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Performance evaluation of database management systems
… query using a DBMS. We presented the ABLE buffer management algorithms for DBMS's. We give cost models for both relational DBMS's and network DBMS's. We also give some of the results of our experiments for testing the performance of the ABLE buffer management algorithm and the accuracy of the cost …
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Learned scheduling for database management systems
Parallel database management systems need efficient job scheduling. Currently systems use simple heuristics ignoring the characteristics of database workloads. Therefore, we created an effective scheduler that uses machine learning techniques, such as reinforcement learning and neural networks, and …
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Autonomic Workload Management for Database Management Systems
In today’s database server environments, multiple types of workloads, such as on-line transaction processing, business intelligence and administrative utilities, can be present in a system simultaneously. Workloads may have different levels of business importance and distinct performance …
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Query processing in heterogeneous distributed database management systems
… in support of heterogeneous distributed database management systems. Heterogeneous distributed database management systems view the integrated data through an uniform global schema. The query processing algorithm described here produces an inexpensive strategy for a query expressed over …
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A relational database management systems approach to system design
Systems are developed to fulfill certain requirements. Several system design configurations usually can fulfill the technical requirements, but at different equivalent life-cycle costs. The problem is how to manipulate and evaluate different system configurations so that the required system …
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Exploring learned join algorithm selection in relational database management systems
… optimizers, crucial components of relational database management systems, are responsible for generating efficient query execution plans. Despite many advances in the database community over the last few decades, most popular relational database management systems today still use cost-based …
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Performance Evaluation of Concurrency Control Algorithms in Distributed Database Management Systems
Submitted by Carly Hafner (chafner2@illinois.edu) on 2014-07-02T17:05:43Z No. of bitstreams: 1 1985_Siebel.pdf: 979777 bytes, checksum: a5d6910614e5f69b4cb0cf162c594b44 (MD5)
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Evaluating database management systems : a framework and application to the Veteran's Administration Hospital.
Thesis. 1978. M.S.--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
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Transaction and version management in object-oriented database management systems for collaborative engineering applications
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1991.
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An update expert and response generator for a transportable natural language interface to database management systems
… transportable natural language interfaces to database management systems (DBMS) have been under study for some years I but until now I all have suffered from a lack of response ability and lack of natural language update ability. Response generation is relatively easy to overcome, but the …
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Performance of Concurrency Control Methods in Distributed Database Management Systems (Timestamp Ordering, Two-Phase Locking, Optimistic Scheme, Restart, Transaction Blocking)
… the performances of those CCMs in distributed database management system (DDBMS) were simulated with some care to get statistically significant results. The performances of the CCMs were then compared with respect to several measures. This study systematically investigated effects of major …
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Design and Implementation of XML in an Object-Relational Database
<p>Both RDBMS (Relational Database Management Systems) and ODBMS (Object- Oriented Database Management Systems) have their own advantages. For example, RDBMS is easy to understand and to access the data, and ODBMS has high performance to handle complex data. When we combine RDBMS and ODBMS's …
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Attribution Standardization for Integrated Concurrent Engineering
… Parametric Computer-Aided Design CAD) systems were introduced. To manage the numerous product design iterations produced by parametric CAD systems, Product Data Management (PDM) systems were developed to capture, document, and manage each product revision. PDM has proved effective thus …
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A Framework for Data Sharing in Computer Supported Cooperative Environments
… cannot be met using existing applications and database management systems developed for non-cooperative environments. The emphasis of concurrency control in conventional database management systems is to keep users and their applications from inadvertently corrupting data rather than support a …
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A database query language for operations on historical data
Information in most existing database management systems reflects only the current state of the data. However, many real world applications require the storage of and access to historical information. In this thesis a historical model is presented which integrates comprehensive time processing …
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Viaduct : an interactive, very-high-level data manipulation language for a microcomputer-based database system.
… very-high-level data manipulation language for a database system is one in which the user specifies in non-procedural terms the operations that are to be performed on the data stored in the database; the actual method by which the operations are executed does not concern the user. VIADUCT provides …
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Interactive visualization of big data leveraging databases for scalable computation
Modern database management systems (DBMS) have been designed to efficiently store, manage and perform computations on massive amounts of data. In contrast, many existing visualization systems do not scale seamlessly from small data sets to enormous ones. We have designed a three-tiered …
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Automatic knobs-tuning for DB2 using deep reinforcement learning
Modern database management systems have hundreds of different configuration parameters (knobs) that control various aspects of how they behave and perform. These knobs must be properly tuned in order to maximize the performance of the database for a given query workload. Traditionally, database …
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Consideration of interdependencies in the relational database system, and, A proposal and evaluation of an expert system for the relational database structure
… in Distributed and non-Distributed Relational Database Management Systems and proposes a design and development of an Expert System to manage and enhance the current available Database Structures; In the first part, we study, compare and evaluate the interdependencies found in the operating …
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Ο ΗΛΕΚΤΡΟΝΙΚΟΣ ΥΠΟΛΟΓΙΣΤΗΣ ΣΤΟ ΣΧΕΔΙΑΣΜΟ ΤΟΥ ΧΩΡΟΥ. ΠΕΙΡΑΜΑΤΙΚΗ ΕΦΑΡΜΟΓΗ: ΤΟ ΣΥΣΤΗΜΑ ΠΛΗΡΟΦΟΡΙΩΝ ΔΥΤΙΚΗΣ ΕΛΛΑΔΑΣ
… IS AN EXTENDED AND SYSTEMATIC USE OF RELATIONAL DATABASE MANAGEMENT SYSTEMS (RDBMS) INA SUCH WAY TO CONSIST A DECISION SUPPORT SYSTEM FOR THE SPATIAL PLANNING PROCESS. FURTHER TO THE CLASSIFICATION OF QUANTITATIVE AND QUALITATIVE GEOGRAPHICAL INFORMATION THAT ANY GEOGRAPHIC INFORMATION SYSTEM …
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