A 1
... implemented in a relational database. Describe how relational data retrieval is accomplished in concept with the select, project, and join operators. Understand how the join operator facilitates data integration in relational database. Describe how unary and ternary relationships are implemented in ...
... implemented in a relational database. Describe how relational data retrieval is accomplished in concept with the select, project, and join operators. Understand how the join operator facilitates data integration in relational database. Describe how unary and ternary relationships are implemented in ...
Ensuring transaction integrity
... Ensuring transaction integrity • User-defined transactions can improve system performance because transaction will be processed as sets rather than individually • Some SQL systems have concurrency controls that handle the updating of a shared database by concurrent users • These can journalise data ...
... Ensuring transaction integrity • User-defined transactions can improve system performance because transaction will be processed as sets rather than individually • Some SQL systems have concurrency controls that handle the updating of a shared database by concurrent users • These can journalise data ...
Formal Relational Query Languages
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
XMach-1: A Benchmark for XML Data Management
... In [Gra93], Gray argues for the use of domain-specific database benchmarks which should be relevant (measuring the performance of typical operations for the respective domain), portable to different platforms, scaleable (applicable to small and large computer systems) and simple. For XML data manage ...
... In [Gra93], Gray argues for the use of domain-specific database benchmarks which should be relevant (measuring the performance of typical operations for the respective domain), portable to different platforms, scaleable (applicable to small and large computer systems) and simple. For XML data manage ...
... This tool aims to improve the internal document management of the company and the interaction between each company (agent) and the WPMS. By choosing some inputs such as the type of contract and the actors that are going to partake in the project, the system generates a matrix where to place each doc ...
The Path to Five 9s
... withstand component and hardware failure with no loss of availability. In addition, they do not have the same degree of management complexity as SQL Server’s built-in software-based solutions. There is no need to create clusters or to implement other involved solutions. NEC’s FT Server systems provi ...
... withstand component and hardware failure with no loss of availability. In addition, they do not have the same degree of management complexity as SQL Server’s built-in software-based solutions. There is no need to create clusters or to implement other involved solutions. NEC’s FT Server systems provi ...
Microsoft SQL Server Database Protection Using
... hardware snapshots, clones, or replication functions. The end result is a data-consistent point-in-time “Smart Copy” of the SQL Server database and volumes. Smart Copies can then be used to fully restore a database or simply recover object level data using various recovery options available to the S ...
... hardware snapshots, clones, or replication functions. The end result is a data-consistent point-in-time “Smart Copy” of the SQL Server database and volumes. Smart Copies can then be used to fully restore a database or simply recover object level data using various recovery options available to the S ...
EMC INFRASTRUCTURE FOR THE SMART GRID ANALYTICS PLATFORM IN PARTNERSHIP WITH
... utility companies can derive additional value from their smart grid investment. The smart grid analytics platform solution is an infrastructure capable of pulling smart grid data from an SSN UIQ application built on Oracle and loading it into a Greenplum Data Computing Appliance (DCA). This infrastr ...
... utility companies can derive additional value from their smart grid investment. The smart grid analytics platform solution is an infrastructure capable of pulling smart grid data from an SSN UIQ application built on Oracle and loading it into a Greenplum Data Computing Appliance (DCA). This infrastr ...
Referential Integrity Quality Metrics
... foreign key value exists in the referenced relation. Referential integrity issues are found in database integration, data quality assurance, data warehousing and data modeling. Referential integrity is violated or relaxed for practical reasons. Database integration represents a common scenario where ...
... foreign key value exists in the referenced relation. Referential integrity issues are found in database integration, data quality assurance, data warehousing and data modeling. Referential integrity is violated or relaxed for practical reasons. Database integration represents a common scenario where ...
Review 2
... For this merge, 5 will be taken as a key value in A since any key value in B is less than or equal to 5 but any key value in C is larger than 5. Sept. 2012 ...
... For this merge, 5 will be taken as a key value in A since any key value in B is less than or equal to 5 but any key value in C is larger than 5. Sept. 2012 ...
Intro. to Data Access Classes and Persistence
... • Persistence can be achieved using sequential files, object serialization, or relational databases • A relational database is used to organize data into tables • In a relational database, each column represents a field and each row represents a record • SQL is a popular, standard language used to a ...
... • Persistence can be achieved using sequential files, object serialization, or relational databases • A relational database is used to organize data into tables • In a relational database, each column represents a field and each row represents a record • SQL is a popular, standard language used to a ...
Zvi`s changes, if any, are marked in green, they are not copyrighted
... First Normal Form (Contd.) Atomicity is actually a property of how the elements of the domain ...
... First Normal Form (Contd.) Atomicity is actually a property of how the elements of the domain ...
Entity Sets
... two). Generally, most relationship sets in a database system are binary. Relationship sets may involve more than two entity sets. ...
... two). Generally, most relationship sets in a database system are binary. Relationship sets may involve more than two entity sets. ...
Management Information Systems 6/e
... databases, row numbers are irrelevant In databases, columns have logical names such as Order Date and Customer Name Data dictionary – contains the logical structure of the information in a database ...
... databases, row numbers are irrelevant In databases, columns have logical names such as Order Date and Customer Name Data dictionary – contains the logical structure of the information in a database ...
PPT - Electrical and Computer Engineering Department
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
Intro to the Class
... Copy of Database (usually remote) Kept up to date with Archive Logs Oracle 8i feature Oracle 9i-10g version of a standby database is Data Guard ...
... Copy of Database (usually remote) Kept up to date with Archive Logs Oracle 8i feature Oracle 9i-10g version of a standby database is Data Guard ...
Spatial Data Storage and Topology in the Redesigned MAF/TIGER
... coordinates are stored at the edge level. In order to determine the coordinate geometry of a face, the geometries of the edges that bound the face must be retrieved. Topologically consistent datasets have the following properties (Kainz 2004): Every edge must be bounded by two nodes (start and end n ...
... coordinates are stored at the edge level. In order to determine the coordinate geometry of a face, the geometries of the edges that bound the face must be retrieved. Topologically consistent datasets have the following properties (Kainz 2004): Every edge must be bounded by two nodes (start and end n ...
Building a Spatial Database in PostgreSQL
... “Much geospatial data is available on the web and in off-line archives, but it is complex, heterogeneous, and incompatible. Users must possess considerable expertise and special geographic information system (GIS) software to overlay or otherwise combine different map layers of the same geographic r ...
... “Much geospatial data is available on the web and in off-line archives, but it is complex, heterogeneous, and incompatible. Users must possess considerable expertise and special geographic information system (GIS) software to overlay or otherwise combine different map layers of the same geographic r ...
Word - 1913 KB - Department of the Environment
... variables for the CFEV assessment (such as biophysical classifications of fluvial geomorphology, macroinvertebrate assemblages, native fish assemblages, etc., and condition variables, e.g. catchment disturbance, nutrient inputs from land use impacts). This data exists as spatial data which illustrat ...
... variables for the CFEV assessment (such as biophysical classifications of fluvial geomorphology, macroinvertebrate assemblages, native fish assemblages, etc., and condition variables, e.g. catchment disturbance, nutrient inputs from land use impacts). This data exists as spatial data which illustrat ...
Chapter 14: Query Optimization
... Conceptually, generate all equivalent expressions by repeatedly executing the following step until no more expressions can be found: for each expression found so far, use all applicable equivalence rules, and add newly generated expressions to the set of expressions found so far The above appr ...
... Conceptually, generate all equivalent expressions by repeatedly executing the following step until no more expressions can be found: for each expression found so far, use all applicable equivalence rules, and add newly generated expressions to the set of expressions found so far The above appr ...
Designing, implementing and evaluating a database for a software
... The objective of this study is to design and implement a database for a software testing team. The previously mentioned design science approach by Hevner et al. (2004) is applied in this study. The database is the design artifact. There are seven guidelines for a successful design science research b ...
... The objective of this study is to design and implement a database for a software testing team. The previously mentioned design science approach by Hevner et al. (2004) is applied in this study. The database is the design artifact. There are seven guidelines for a successful design science research b ...
Tlak 99 - University of Southern California
... Variety of binary temporal joins have been proposed: time-join, time-equijoin, … as extensions of nested loop or merge join that exploits orders or local workspace as well as ...
... Variety of binary temporal joins have been proposed: time-join, time-equijoin, … as extensions of nested loop or merge join that exploits orders or local workspace as well as ...
Microsoft Jet Database Engine
The Microsoft Jet Database Engine is a database engine on which several Microsoft products have been built. A database engine is the underlying component of a database, a collection of information stored on a computer in a systematic way. The first version of Jet was developed in 1992, consisting of three modules which could be used to manipulate a database.Database connect for MicrosoftJET stands for Joint Engine Technology, sometimes being referred to as Microsoft JET Engine or simply Jet. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine. It has since been superseded for general use, however, first by Microsoft Desktop Engine (MSDE), then later by SQL Server Express. For larger database needs, Jet databases can be upgraded (or, in Microsoft parlance, ""up-sized"") to Microsoft's flagship database product, SQL Server.However, this does not mean that a MS Jet (Red) database cannot match MS SQL Server in storage capacity. A 5 billion record MS Jet (Red) database with compression and encryption turned on requires about 1 terabyte of disk storage space, comprising hundreds of (*.mdb) files, each acting as partial table, and not as a database in itself.Over the years, Jet has become almost synonymous with Microsoft Access, to the extent that many people refer to a Jet database as an ""Access database"".