distributed database management systems

... ShapeFile) • Overview of GIS Database Design • Continuous, non-tiled, spatial database for adding spatial data to a relational database management system (RDBMS) • Database interface that couples ... Croswell, 1991 Relational Database Management System - a database system made up of files with data elements in two-dimensional array (rows and columns) This database management system has the ... Comprised of two systems - one to handle the spatial elements, another to manage attribute data • Most hybrid systems use a proprietary data model • Separate storage systems complicate database maintenance,...

Ngày tải lên: 17/03/2014, 00:20

... Introduction to Distributed Databases 22.6.1 Types of Distributed Databases 22.7 Distributed DBMS Architectures 22.7.1 Client-Server Systems 22.7.2 Collaborating Server Systems 22.7.3 Midclleware Systems ... Retrieval and XML Data Management Relational Model SQLDDL Dependencies j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j DATABASE MANAGEMENT SYSTEMS DATABASE MANAGEMENT SYSTEMS Third Edition ... Data Integration 29.3 Mobile Databases 29.4 Main Memory Databases 29.5 Multimedia Databases 29.6 Geographic Information Systems 29.7 Temporal Databases 29.8 Biological Databases 29.9 Information...

Ngày tải lên: 29/03/2014, 12:20

... Documents metadata Database Document Text Documents Document Meta Data Database metadata Document Document Text Documents Database Click on your answer Database management systems - Using a database for ... answers Database management systems - Using a database for document retrieval - page Using a database for delivery Now, you can start to choose the delivery system, that is how information will be distributed ... you need to put in to reach different groups of users Database management systems - Using a database for document retrieval - page Using a database for delivery You should consider delivering...

Ngày tải lên: 31/03/2014, 20:20

... than systems which everything in the database Database management systems - Using a database for document management - page Using a database for management There are advantages to using systems ... when stored in the database, rather than the file system Database Using a database for management Databases are used in document management systems and in web content management systems The choice ... control loops Database management systems - Using a database for document management - page Requirements for document management Content management is the other area of document management This...

Ngày tải lên: 31/03/2014, 20:20

... by the two main types of databases: textual and relational Database management systems - Textual, relational and xml databases – page Flat file databases The flat file database can be considered ... products Database management systems - Textual, relational and xml databases – page 12 XML and databases Recently there has been much technical work on the linkage of XML and databases Relational databases ... following types of database can meet your needs? A relational database A textual database Please click on the answer of your choice Database management systems - Textual, relational and xml databases...

Ngày tải lên: 31/03/2014, 20:20

... Date An Introduction to Database Systems Addison Wesley; ISBN: 0201787229 The definitive book on database systems C.J Date, Hugh Darwen Foundation for Future Database Systems: The Third Manifesto ... users may or may not with the objects in the database To this we need to use the Structured Query Language (SQL) Database management systems - Relational databases and SQL basics – page From relations ... relational database SQL is more than simply a query language; it is a database sub-language and is becoming the standard interface to relational and non-relational database management systems (DBMS)...

Ngày tải lên: 31/03/2014, 20:20

... of tools for relational database management A textual database A set of tools for textual database management Click on your answer Database management systems - Textual databases and cds/isis ... Set of Information Systems) , is a textual database management system designed to build and manage textual databases Database management systems - Textual databases and cds/isis basics – page What ... the work required, let’s design a CDS/ISIS database Database management systems - Textual databases and cds/isis basics – page Designing a CDS/ISIS database Developers have to create a series...

Ngày tải lên: 31/03/2014, 20:20

... Tolerance in Highly Available Database Management Systems by Mark Paul Sullivan Abstract Today, software errors are the leading cause of outages in fault tolerant systems System availability can ... main memory resident databases Extensible DBMSs include extended relational systems [70], object-oriented systems [6], and DBMS toolkits [14] An extensible DBMS lets users or database administrators ... Most database management systems rely on temporal redundancy to recover from software errors Most of recovery techniques surveyed in Haerder and Reuter [34] restore CHAPTER INTRODUCTION 10 the database...

Ngày tải lên: 28/04/2014, 13:32

... Introduction to Distributed Databases 21.5.1 Types of Distributed Databases Distributed DBMS Architectures 21.6.1 Client-Server Systems 21.6.2 Collaborating Server Systems 21.6.3 Middleware Systems Storing ... and distributed database management, Internet databases, data warehousing and complex Introduction to Database Systems queries for decision support, data mining, object databases, spatial data management, ... several commercial systems based on this model [634] contains a good annotated collection of systems- oriented papers on database management Other texts covering database management systems include...

Ngày tải lên: 23/06/2014, 20:10

... Introduction to Distributed Databases 21.5.1 Types of Distributed Databases Distributed DBMS Architectures 21.6.1 Client-Server Systems 21.6.2 Collaborating Server Systems 21.6.3 Middleware Systems Storing ... and distributed database management, Internet databases, data warehousing and complex Introduction to Database Systems queries for decision support, data mining, object databases, spatial data management, ... several commercial systems based on this model [634] contains a good annotated collection of systems- oriented papers on database management Other texts covering database management systems include...

Ngày tải lên: 08/08/2014, 18:22

... Client-server execution and remote database access: These commands control how a client application program can connect to an SQL database server, or access data from a database over a network This ... (DELETE, UPDATE) of relations (Section 3.1) Integrity constraints are conditions on a database schema that every legal database instance has to satisfy Besides domain constraints, other important types ... constraints, explain why Exercise 3.15 Consider the Notown database from Exercise 2.5 You have decided to recommend that Notown use a relational database system to store company data Show the SQL statements...

Ngày tải lên: 08/08/2014, 18:22

... and clock 7.4.2 Buffer Management in DBMS versus OS Obvious similarities exist between virtual memory in operating systems and buffer management in database management systems In both cases the ... Designing and managing complex rule systems is discussed in [50, 190] [121] discusses rule management using Chimera, a data model and language for active database systems 6 QUERY-BY-EXAMPLE (QBE) ... then responsible for managing the space in these OS files Many database systems not rely on the OS file system and instead their own disk management, either from scratch or by extending OS facilities...

Ngày tải lên: 08/08/2014, 18:22

... requires a sorting step (Section 12.5.2) Although main memory sizes are increasing, as usage of database systems increases, increasingly larger datasets are becoming common as well When the data to ... these systems uses the optimization that produces runs larger than available memory, in part because it is difficult to implement it efficiently in the presence of variable length records In all systems, ... are about ∗ B pages long, on average This refinement has not been implemented in commercial database systems because managing the main memory available for sorting becomes difficult with replacement...

Ngày tải lên: 08/08/2014, 18:22

... Real systems vary in their catalog schema design, but the catalog is always implemented as a collection of relations, and it essentially describes all the data stored in the database. 1 Some systems ... files corresponding to users’ relations and indexes represents the data in the database A fundamental property of a database system is that it maintains a description of all the data that it contains ... value ILow(I) and the maximum present key value IHigh(I) for each index I We will assume that the database architecture presented in Chapter is used Further, we assume that each file of records is...

Ngày tải lên: 08/08/2014, 18:22

... information systems Object -Database Benchmarks: The 001 and 007 benchmarks measure the performance of object-oriented database systems The Bucky benchmark measures the performance of object-relational database ... come into play We discuss the impact of concurrency on database design in Section 16.10 We discuss distributed databases in Chapter 21 16.1.1 Database Workloads The key to good physical design is ... this case than with an index on age, sal 16.7 OVERVIEW OF DATABASE TUNING After the initial phase of database design, actual use of the database provides a valuable source of detailed information...

Ngày tải lên: 08/08/2014, 18:22

... is unlikely to beat lock-based protocols in centralized systems Indeed, it has mainly been studied in the context of distributed database systems (Chapter 21) 19.5.3 Multiversion Concurrency Control ... in [398] Optimistic concurrency control is introduced in [395] Transaction management issues for real-time database systems are discussed in [1, 11, 311, 322, 326, 387] A locking approach for ... is to ensure that a transaction never has to wait to read a database object, and the idea is to maintain several versions of each database object, each with a write timestamp, and to let transaction...

Ngày tải lên: 08/08/2014, 18:22

... case that for future high Parallel and Distributed Databases 641 performance database systems, parallelism will be the key Scheduling in parallel database systems is discussed in [454] [431] contains ... parallel database systems Textbook discussions of distributed databases include [65, 123, 505] Good survey articles include [72], which focuses on concurrency control; [555], which is about distributed ... result: Internet Databases 661 Commercial database systems and XML: Many relational and objectrelational database system vendors are currently looking into support for XML in their database engines...

Ngày tải lên: 08/08/2014, 18:22

... Object -Database Systems 737 We will use acronyms for relational database management systems (RDBMS), objectoriented database management systems (OODBMS), and object-relational database management systems ... language environment Object-relational database systems: Object-relational database systems can be thought of as an attempt to extend relational database systems with the functionality necessary ... influenced efforts to enhance database support for complex data and have led to the development of object -database systems, which we discuss in this chapter Object -database systems have developed along...

Ngày tải lên: 08/08/2014, 18:22

... Principles of Database Systems, 1987 [64] C Beeri and R Ramakrishnan On the power of magic In ACM Symp on Principles of Database Systems, 1987 [65] D Bell and J Grimson Distributed Database Systems ... concurrency control in distributed database systems In Proc Intl Conf on Very Large Databases, 1980 [72] P Bernstein and N Goodman Concurrency control in distributed database systems ACM Computing ... Statistical database design ACM Transactions on Database Systems, 6(1):113–139, 1981 [149] J Chomicki Real-time integrity constraints In ACM Symp on Principles of Database Systems, 1992 854 Database Management...

Ngày tải lên: 08/08/2014, 18:22

... National Language Support Distributed Database Concepts 1-1 Oracle’s Distributed Database Architecture Oracle’s Distributed Database Architecture A distributed database is a set of databases stored on ... Databases and Database Links Each database in a distributed database is distinct from all other databases in the system and has its own global database name Oracle forms a database s global database ... Oracle database to another database Distributed Database Concepts 1-5 Oracle’s Distributed Database Architecture Database links are essentially transparent to the users of an Oracle distributed database...

Ngày tải lên: 17/01/2014, 09:20