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Introduction of Week 2
Introduction of Week 2

...  Alter database parameters that can not be easily performed with ALTER statement  Modify database structures with cascading effects  Change a column’s data type and length  Remove columns from a table  Batch requested changes into a work list that can be executing in the foreground or the backg ...
Unle ashing the Full Potenti alof the ORA CL E DBMS byLever
Unle ashing the Full Potenti alof the ORA CL E DBMS byLever

... times shorter than 1 centisecond are displayed as -1 by V$SESSION_WAIT. At this resolution, it is impossible to see disk access times at session level. Peaks in I/O service time also remain unnoticed, as long as the duration of the wait events stays below 1 centisecond, which it normally will. Below ...
Simple Database Mathematics and the Query Converter
Simple Database Mathematics and the Query Converter

... All of these can be valid reasons to emphasize coding and talk less about modelling and  design. However, awareness of the three components is useful, because it helps us  understand when flaws in the final code are actually flaws in the modelling or the design. This  is particularly useful in the c ...
Intro_to_IO_Monitoring_-_Counters_That_Count_
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... A key declaration can also be another element in the list of elements of a CREATE TABLE statement. This form is essential if the key consists of more than one attribute.  May be used even for one-attribute keys. ...
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Spatial Query Languages - Spatial Database Group
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... Learning Objectives (LO) LO1: Understand concept of a query language LO2 : Learn to use standard query language (SQL) LO3: Learn to use spatial ADTs with SQL • Learn about OGIS standard spatial data types and operations • Learn to use OGIS spatial ADTs with SQL ...
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...  SEQUEL (Structures English QUery Language) – early 70’s, IBM Research  SQL (ANSI 1986), SQL1 or SQL86  SQL2 or SQL92  SQL3 or SQL99  Core specification and optional specialized packages ...
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... • The Java interpreter sends the SQL statement to the database system. • The database system sets up a plan so that the search can be done in the most efficient way possible. • Unnecessary to compile again if only literals are changed: – select * from person where firstName like ’ANNE’ and lastName ...
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... SpeedXML is not dependant from a database system and allows to connect to all relationnal databases. Results of SQL queries use is unlimite. Thanks to key words, intagrating dynamical parts (files, URL…) is done without conceptual contraints. Based on SQL technology, SpeedXML can use all the the pow ...
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... perform the action which may return data in a variety of formats. Dim catCMD As SqlCommand = New SqlCommand("SELECT CategoryID, _ CategoryName FROM Categories", nwindConn) Dim myReader As SqlDataReader = ...
DPM 2007 - Microsoft
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... Abstraction & Interface (Database language: SQL) Perform dirty work that you don’t want applications to do ...
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Data Access - Tonga Institute of Higher Education
Data Access - Tonga Institute of Higher Education

... (FirstName) values (‘Ma’’afu’)” ...
RepliStor Database Consistency Solution Sheet
RepliStor Database Consistency Solution Sheet

SQL Analysis Services-2005
SQL Analysis Services-2005

... Aggregations provide performance improvements by allowing Microsoft SQL Server 2005 Analysis Services (SSAS) to retrieve pre-calculated totals directly from cube storage instead of having to recalculate data from an underlying data source for each query. The Aggregation Design Wizard uses a sophisti ...
PHP and MySQL - Jacksonville University
PHP and MySQL - Jacksonville University

... Database server processes the query. Database sends back results to PHP server. PHP formats data that it received from database server nicely for HTML. PHP engine finishes running script. PHP returns HTML to the web server. Web server passes HTML back to the browser. ...
TCSS 564 - DATABASE SYSTEMS INTERNALS SYLLABUS
TCSS 564 - DATABASE SYSTEMS INTERNALS SYLLABUS

... This course is an advanced level computer science elective in database systems. The course studies the internals of a database system and explores key topics in database research. The course also gives a hands-on experience on the internals of one of the commercial database management systems (DBMSs ...
Infor Cloverleaf Data Integrator
Infor Cloverleaf Data Integrator

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SQL

SQL (/ˈɛs kjuː ˈɛl/, or /ˈsiːkwəl/; Structured Query Language) is a special-purpose programming language designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).Originally based upon relational algebra and tuple relational calculus, SQL consists of a data definition language, data manipulation language, and a data control language. The scope of SQL includes data insert, query, update and delete, schema creation and modification, and data access control. Although SQL is often described as, and to a great extent is, a declarative language (4GL), it also includes procedural elements.SQL was one of the first commercial languages for Edgar F. Codd's relational model, as described in his influential 1970 paper, ""A Relational Model of Data for Large Shared Data Banks."" Despite not entirely adhering to the relational model as described by Codd, it became the most widely used database language.SQL became a standard of the American National Standards Institute (ANSI) in 1986, and of the International Organization for Standardization (ISO) in 1987. Since then, the standard has been revised to include a larger set of features. Despite the existence of such standards, though, most SQL code is not completely portable among different database systems without adjustments.
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