Wrap-up, review
... Normal Forms 1NF – A table that qualifies as a relation is in 1NF 2NF – A relation is in 2NF if all of its nonkey attributes are dependent on all of the primary key 3NF – A relation is in 3NF if it is in 2NF and every determinant is a superkey Boyce-Codd Normal Form (BCNF) – A relation is i ...
... Normal Forms 1NF – A table that qualifies as a relation is in 1NF 2NF – A relation is in 2NF if all of its nonkey attributes are dependent on all of the primary key 3NF – A relation is in 3NF if it is in 2NF and every determinant is a superkey Boyce-Codd Normal Form (BCNF) – A relation is i ...
SilkRoute : A Framework for Publishing Relational Data - CS
... XML data to be exchanged between their applications. The aim is to use XML as a “lingua franca” for inter-enterprise applications, making it possible for data to be exchanged regardless of the platform on which it is stored or the data model in which it is represented. Most existing data, however, i ...
... XML data to be exchanged between their applications. The aim is to use XML as a “lingua franca” for inter-enterprise applications, making it possible for data to be exchanged regardless of the platform on which it is stored or the data model in which it is represented. Most existing data, however, i ...
... Based on the fuzzy attribute fuzzy interpreter fetches the domain set of that attribute from the database and then finds the membership value for fuzzy equality of each domain value of the fuzzy attribute with respect to the given fuzzy data in the fuzzy query from fuzzy table. In fuzzy table, membe ...
Survey Paper for CS748T Distributed Database Management
... associated with each collection of data items, where each of the Ps is a predicate formula with at most one free variable, specifying what type of add, delete and modify operations respectively are allowed on the collection. Note that, in particular the Ps may involve part of the database instance a ...
... associated with each collection of data items, where each of the Ps is a predicate formula with at most one free variable, specifying what type of add, delete and modify operations respectively are allowed on the collection. Note that, in particular the Ps may involve part of the database instance a ...
Lecture 8 - Electrical and Computer Engineering Department
... To check if a functional dependency holds (or, in other words, is in F+), just check if +. ...
... To check if a functional dependency holds (or, in other words, is in F+), just check if +. ...
Dialogue based Question Answering System in Telugu
... 2004). These two domains use thesauri and lexicons in classifying documents and categorizing the questions. Open domain question answering deals with questions about nearly everything and can only rely on general ontology. It has become a very active research area over the past few years. On the oth ...
... 2004). These two domains use thesauri and lexicons in classifying documents and categorizing the questions. Open domain question answering deals with questions about nearly everything and can only rely on general ontology. It has become a very active research area over the past few years. On the oth ...
A Methodology of A Database Schema Design Using
... their using may lead to logically incorrect database updates. Accordingly, such a potential schema must not be considered as a resulting database schema, after the integration of the set of subschemas. The explanation of the notion of a safe database update follows. A subschema is a description of t ...
... their using may lead to logically incorrect database updates. Accordingly, such a potential schema must not be considered as a resulting database schema, after the integration of the set of subschemas. The explanation of the notion of a safe database update follows. A subschema is a description of t ...
Introduction to Python programming for biologists
... Deerfield II, National Resource for Biomedical Supercomputing, Pittsburgh Supercomputing Center, Carnegie Mellon University. • Dr. Ricardo González Méndez, University of Puerto Rico Medical Sciences Campus. ...
... Deerfield II, National Resource for Biomedical Supercomputing, Pittsburgh Supercomputing Center, Carnegie Mellon University. • Dr. Ricardo González Méndez, University of Puerto Rico Medical Sciences Campus. ...
Dynamic Test Input Generation for Database
... must faithfully model the semantics of both languages and analyze the mixed code under that model to generate tests inputs. Such an analysis must cross the boundaries between the application and the database. We describe an algorithm and a tool for the automatic generation of test input data for dat ...
... must faithfully model the semantics of both languages and analyze the mixed code under that model to generate tests inputs. Such an analysis must cross the boundaries between the application and the database. We describe an algorithm and a tool for the automatic generation of test input data for dat ...
On Arbitrage-free Pricing for General Data Queries
... as well. For example, if a consumer pays for a query returning the maximum M and minimum m of a numeric attribute (such as salary) and if m = M for the current database instance, then the consumer gains the ability to answer any query about that attribute. If such queries cost more than what the con ...
... as well. For example, if a consumer pays for a query returning the maximum M and minimum m of a numeric attribute (such as salary) and if m = M for the current database instance, then the consumer gains the ability to answer any query about that attribute. If such queries cost more than what the con ...
hierarchical vs. relational xml schema designs
... are conceptually distinct and not duplicative of one another. This mechanism de mands a strategy for mapping keys to the corresponding keys in the destination database (where data from the instance will be stored). Yet the use of a database key spares application developers the need to develop b ...
... are conceptually distinct and not duplicative of one another. This mechanism de mands a strategy for mapping keys to the corresponding keys in the destination database (where data from the instance will be stored). Yet the use of a database key spares application developers the need to develop b ...
DACFx - Team System Cafe
... Package-centric framework (.dacpac/.bacpac) Self contained database entities used by an application Authored alongside your application code in Visual Studio Consistent story for development, migration, and versioning across the SQL Server platform ...
... Package-centric framework (.dacpac/.bacpac) Self contained database entities used by an application Authored alongside your application code in Visual Studio Consistent story for development, migration, and versioning across the SQL Server platform ...
Multiple Choice Tutorial
... Relational database systems have became increasingly popular single the late 1970's. They offer a powerful method for storing data in an application-independent manner. This means for many enterprises the database is at the core of the I.T. strategy. Developments can progress around a relatively sta ...
... Relational database systems have became increasingly popular single the late 1970's. They offer a powerful method for storing data in an application-independent manner. This means for many enterprises the database is at the core of the I.T. strategy. Developments can progress around a relatively sta ...
Succeeding in Business with Microsoft Excel 2003: A Problem
... Analyzing Data from More than One Table (continued) • Join tables – Linking of tables using primary and foreign keys ...
... Analyzing Data from More than One Table (continued) • Join tables – Linking of tables using primary and foreign keys ...
Database Tuning Principles, Experiments and Troubleshooting
... SQL Server 7, DB2 v7.1 and Oracle 8i on Windows 2000 No lock escalation on Oracle; Parameter set so that there is no lock escalation on DB2; no control on SQL Server. ...
... SQL Server 7, DB2 v7.1 and Oracle 8i on Windows 2000 No lock escalation on Oracle; Parameter set so that there is no lock escalation on DB2; no control on SQL Server. ...
Java Database Connectivity (JDBC)
... server level. The JDBC driver on the client uses sockets to call a middleware application on the server that translates the client requests into an API specific to the desired driver. ...
... server level. The JDBC driver on the client uses sockets to call a middleware application on the server that translates the client requests into an API specific to the desired driver. ...
The Relational Model - Department of Computer Science | UNC
... ICs are based upon the semantics of the realworld enterprise that is being described in the database relations. We can check a database instance to see if an IC is violated, but we can NEVER infer that an IC is true by looking at an instance. ...
... ICs are based upon the semantics of the realworld enterprise that is being described in the database relations. We can check a database instance to see if an IC is violated, but we can NEVER infer that an IC is true by looking at an instance. ...
Advanced Database Techniques 2010
... SELECT * FROM ONEKTUP, TENKTUP1 WHERE (ONEKTUP.unique1 = TENKTUP1.unique1) AND (TENKTUP1.unique1 = TENKTUP2.unique1) AND (TENKTUP1.unique1 < 1000) ...
... SELECT * FROM ONEKTUP, TENKTUP1 WHERE (ONEKTUP.unique1 = TENKTUP1.unique1) AND (TENKTUP1.unique1 = TENKTUP2.unique1) AND (TENKTUP1.unique1 < 1000) ...