Week 17 slides 1 7 multidimensional, parallel, and distributed database
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The document discusses advanced database systems, focusing on multidimensional, parallel, and distributed databases. Multidimensional databases allow aggregations from various relational databases, while parallel DBMS operates on multiple processors to enhance performance. Distributed databases are shared collections of data across a network, with advantages such as expandability and reliability, but also face challenges like cost and complexity.
Week 17 slides 1 7 multidimensional, parallel, and distributed database
- 1. Advanced Database Systems What is Multidimensional Database? A multidimensional database is a form of database designed in large number of aggregations and summarizations. It can receive data from a variety of relational databases such as * Property of STI Page 1 of 7 Multidimensional, Parallel, and Distributed Database of relational databases such as Oracle, SQL Server, and Sybase.
- 2. Advanced Database Systems Parallel DBMS A parallel DBMS is a DBMS running across multiple processors and storage device designed to execute operations in parallel to improve performance. One of the key factors in * Property of STI Page 2 of 7 Multidimensional, Parallel, and Distributed Database One of the key factors in implementing parallel DBMS is to have a shared resource management such as shared memory, shared hard disk, or shared nothing.
- 3. Advanced Database Systems What is Distributed Database? A distributed database is defined as the logically interrelated collection of shared data physically distributed over a computer network. Each of this is stored on one or * Property of STI Page 3 of 7 Multidimensional, Parallel, and Distributed Database Each of this is stored on one or more computers under the control of a separate DBMS.
- 4. Advanced Database Systems Characteristics of Distributed DBMS The Distributed DBMS has the following characteristics: A collection of logically related shared data Fragments may be replicated Transparency The data at each site is under * Property of STI Page 4 of 7 Multidimensional, Parallel, and Distributed Database The data at each site is under the control of DBMS The DBMS at each site can handle local applications, autonomously and each DBMS participates in at least one global application Concurrency control
- 5. Advanced Database Systems Advantages and Disadvantages of Distributed DBMS Here are the advantages of distributed DBMS: Expandability Local Autonomy Improved availability and reliability * Property of STI Page 5 of 7 Multidimensional, Parallel, and Distributed Database reliability Improved performance Integration
- 6. Advanced Database Systems Here are the disadvantages of distributed DBMS: Cost Integrity control more difficult Complexity Security Advantages and Disadvantages of Distributed DBMS * Property of STI Page 6 of 7 Multidimensional, Parallel, and Distributed Database Security Database design more complex
- 7. Advanced Database Systems Functions of Distributed DBMS Here are the functions of the Distributed DBMS: Extended communication services Extended system catalog Distributed query processing * Property of STI Page 7 of 7 Multidimensional, Parallel, and Distributed Database Distributed query processing Extended security control Extended concurrency control Extended recovery services