TinyDB Documentation Release 2.1.0 Markus Siemens October 14, 2014
... To convert your data to a format that is writable to disk TinyDB uses the Python JSON module by default. It’s great when only simple data types are involved but it cannot handle more complex data types like custom classes. On Python 2 it also converts strings to unicode strings upon reading (describ ...
... To convert your data to a format that is writable to disk TinyDB uses the Python JSON module by default. It’s great when only simple data types are involved but it cannot handle more complex data types like custom classes. On Python 2 it also converts strings to unicode strings upon reading (describ ...
SQL Server Replication: Providing High Availability using Database
... Subscriber servers or, in the case of peer-to-peer replication, multiple peer servers with the replication stream flowing in both directions between the peers. Furthermore, the roles of the various replication servers can be played by one server or by individual servers (the more common case), and i ...
... Subscriber servers or, in the case of peer-to-peer replication, multiple peer servers with the replication stream flowing in both directions between the peers. Furthermore, the roles of the various replication servers can be played by one server or by individual servers (the more common case), and i ...
SQL Server and Oracle
... Museum, Library and Archive manual), you may open, in a/o Microsoft’s SQL Server Management Studio (Express) or SQL Server Enterprise Manager, an Adlib SQL Server database, and in the Oracle Enterprise Manager Console an Adlib Oracle database, if you would like to see the structure or contents of it ...
... Museum, Library and Archive manual), you may open, in a/o Microsoft’s SQL Server Management Studio (Express) or SQL Server Enterprise Manager, an Adlib SQL Server database, and in the Oracle Enterprise Manager Console an Adlib Oracle database, if you would like to see the structure or contents of it ...
2007_106_soorma_ppt - Oracle DBA – Tips and Techniques
... • VIPs are used in order to facilitate faster failover in the event of a node failure • Each node not only has its own statically assigned IP address as well as also a virtual IP address that is assigned to the node • The listener on each node will be listening on the Virtual IP and client connectio ...
... • VIPs are used in order to facilitate faster failover in the event of a node failure • Each node not only has its own statically assigned IP address as well as also a virtual IP address that is assigned to the node • The listener on each node will be listening on the Virtual IP and client connectio ...
Is Actian PSQL a Relational Database Server?
... A SQL database server is a database server that supports the SQL database language. SQL is an incredibly popular database language. It supports a small, but very powerful, set of statements for manipulating, managing, and protecting data stored in a database. This power has resulted in its tremendou ...
... A SQL database server is a database server that supports the SQL database language. SQL is an incredibly popular database language. It supports a small, but very powerful, set of statements for manipulating, managing, and protecting data stored in a database. This power has resulted in its tremendou ...
(A) R
... A canonical cover for F is a set of dependencies Fc such that F logically implies all dependencies in Fc, and Fc logically implies all dependencies in F, and No functional dependency in Fc contains an extraneous attribute, and Each left side of functional dependency in Fc is unique. ...
... A canonical cover for F is a set of dependencies Fc such that F logically implies all dependencies in Fc, and Fc logically implies all dependencies in F, and No functional dependency in Fc contains an extraneous attribute, and Each left side of functional dependency in Fc is unique. ...
Review
... SQL entity that corresponds to a relation An element of the database schema SQL is current standard Database vendors generally deviate from ...
... SQL entity that corresponds to a relation An element of the database schema SQL is current standard Database vendors generally deviate from ...
Chapter 3 - WordPress.com
... • A view is the dynamic result of one or more relational operations operating on the base relations to produce another virtual relation that does not actually exist as presented. So a view is virtually derived relation that does not necessarily exist in the database but can be produced upon request ...
... • A view is the dynamic result of one or more relational operations operating on the base relations to produce another virtual relation that does not actually exist as presented. So a view is virtually derived relation that does not necessarily exist in the database but can be produced upon request ...
CHOROCHRONOS: Research on Spatiotemporal Database Systems
... to temporal databases, by restricting attention to one dimension only. But so far relatively little systematic interaction and synergy among these two areas has occurred. CHOROCHRONOS aims to achieve exactly this kind of interaction and synergy, and aims also to address the many real-life problems t ...
... to temporal databases, by restricting attention to one dimension only. But so far relatively little systematic interaction and synergy among these two areas has occurred. CHOROCHRONOS aims to achieve exactly this kind of interaction and synergy, and aims also to address the many real-life problems t ...
The SDL Library: Querying a Relational Database with an Ontology, Rules and the Jess Engine
... The most of data processed in modern applications come from relational databases. Such data is described only by their schema (a structure of data). Without strictly defined semantics there is often a mismatching problem with table and column names in databases. Moreover, it is rather difficult to q ...
... The most of data processed in modern applications come from relational databases. Such data is described only by their schema (a structure of data). Without strictly defined semantics there is often a mismatching problem with table and column names in databases. Moreover, it is rather difficult to q ...
Systems for Knowledge Discovery in Databases
... (DBMS) is a collection of procedures for retrieving, storing, and manipulating data within a set of database tables. In many cases, the separate tables of a relational database can be logically joined by constructing a universal relation (UR) [Ullman, 1982]. A UR is either computed and stored, or, i ...
... (DBMS) is a collection of procedures for retrieving, storing, and manipulating data within a set of database tables. In many cases, the separate tables of a relational database can be logically joined by constructing a universal relation (UR) [Ullman, 1982]. A UR is either computed and stored, or, i ...
Technology Architecture Review Collaborative
... The following document is posted by the Low Income Investment Fund (LIIF) in accordance with the requirements of the Fannie Mae Foundation’s October 2001 grant in support of LIIF’s continued information technology (IT) development. Materials posted by LIIF outline the organization’s strategic IT pla ...
... The following document is posted by the Low Income Investment Fund (LIIF) in accordance with the requirements of the Fannie Mae Foundation’s October 2001 grant in support of LIIF’s continued information technology (IT) development. Materials posted by LIIF outline the organization’s strategic IT pla ...
Ch8_Storage_Indexing..
... for data records (instead of a Heap file or sorted file). At most one index on a given collection of data records can use Alternative 1. (Otherwise, data records are duplicated, leading to redundant storage and potential inconsistency.) If data records are very large, # of pages containing data entr ...
... for data records (instead of a Heap file or sorted file). At most one index on a given collection of data records can use Alternative 1. (Otherwise, data records are duplicated, leading to redundant storage and potential inconsistency.) If data records are very large, # of pages containing data entr ...
Data Source Architectural Patterns
... A clear benefit of Gateway is that it also makes it easier for you to swap out one kind of resource for another Any change in resources means that you only have to alter the Gateway class—the change doesn't ripple through the rest of the system Gateway is a simple and powerful form of protected vari ...
... A clear benefit of Gateway is that it also makes it easier for you to swap out one kind of resource for another Any change in resources means that you only have to alter the Gateway class—the change doesn't ripple through the rest of the system Gateway is a simple and powerful form of protected vari ...
Entity Sets
... and a set of medical doctors. Associate with each patient a log of various tests and examinations conducted. ...
... and a set of medical doctors. Associate with each patient a log of various tests and examinations conducted. ...
Document
... inner joins and outer joins • Subqueries and correlated queries are used when it is necessary to process data based on other processed data • SQL functions are used to extract or transform data Database Systems: Design, Implementation, & Management, 6th Edition, Rob & Coronel ...
... inner joins and outer joins • Subqueries and correlated queries are used when it is necessary to process data based on other processed data • SQL functions are used to extract or transform data Database Systems: Design, Implementation, & Management, 6th Edition, Rob & Coronel ...
Database Reorganization
... BERG80b also describes some types of levels of the A N S I SPARC database architecture (a proposed architectural framechanges. work for database systems) [Tsm77] are labeled at the right. Senko has pointed out 1.1 Overview of the Classification a correspondence between ANSI SPARC The classification ...
... BERG80b also describes some types of levels of the A N S I SPARC database architecture (a proposed architectural framechanges. work for database systems) [Tsm77] are labeled at the right. Senko has pointed out 1.1 Overview of the Classification a correspondence between ANSI SPARC The classification ...
End of SQL: Triggers, Impedance Mismatch and Transactions
... • Transaction = group of statements that must be executed atomically • Transaction properties: ACID – ATOMICITY = all or nothing – CONSISTENCY = leave database in consistent state – ISOLATION = as if it were the only transaction in the system – DURABILITY = store on disk ! ...
... • Transaction = group of statements that must be executed atomically • Transaction properties: ACID – ATOMICITY = all or nothing – CONSISTENCY = leave database in consistent state – ISOLATION = as if it were the only transaction in the system – DURABILITY = store on disk ! ...
The realities of polyglot persistence in mainstream enterprises
... structured query language. In practice, the term NoSQL is used loosely to refer to non-relational databases designed for distributed environments, rather than the associated query languages. PwC uses the term NoSQL, despite its inadequacies, to refer to non-relational distributed databases because i ...
... structured query language. In practice, the term NoSQL is used loosely to refer to non-relational databases designed for distributed environments, rather than the associated query languages. PwC uses the term NoSQL, despite its inadequacies, to refer to non-relational distributed databases because i ...
Data persistence in programming languages : a survey
... within traditional programming languages, usually COBOL or P L / L The INGRES system supports a number of database languages, including SQL and QUEL, and provides the ability to embed database language commands within COBOL, F O R T R A N , BASIC, Pascal, and C programs. Communication is through a s ...
... within traditional programming languages, usually COBOL or P L / L The INGRES system supports a number of database languages, including SQL and QUEL, and provides the ability to embed database language commands within COBOL, F O R T R A N , BASIC, Pascal, and C programs. Communication is through a s ...
0214_statisticalDB - Emory Math/CS Department
... query exceeds a given threshold, the requested statistic is not released. • A query q(C) is only allowed if: | q (C ) ^ q (D) | ≤ r, r > 0 Where r is set by the administrator ...
... query exceeds a given threshold, the requested statistic is not released. • A query q(C) is only allowed if: | q (C ) ^ q (D) | ≤ r, r > 0 Where r is set by the administrator ...