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lesson3.7
lesson3.7

...  Protection from improper use of privileged machine intructions. ...
presentation source
presentation source

... Understand formats of various types of documents -- one indexing program corresponds to one type of document. (i.e. The format of NetNews articles is different from the articles in the New York Times) Extract indexed fields from document and store them in the database. ...
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Deductive Databases - Theory Meets Practice
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... always a database administrator’s (DBA’s) top priority. Who can access the data, what data they can access, and how to access the data are often main topics of conversation inside and outside the information technology (IT) department. Data access needs will vary across applications, departments, an ...
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... ƒ Both the filing cabinet and database provide you with a way to manage and organize data so that it can be quickly retrieved. However, because the database is automated it shortens the time required to search for data, sort data, add to the data, delete from the data, and edit the data ƒ With a rel ...
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... functionality needs to be added for databases to process spatial data types. These are typically called geometry or feature. Spatial database systems: 1. IBM DB2 Spatial Extender can be used to enable any edition of DB2, including the free DB2 Express-C, with support for spatial types 2. Oracle Spat ...
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... state), Name, Address, Tel, and NrBooks (the number of books that this person has borrowed at the moment). CustomerNr is the primary key. PersonNr is an alternative key.  A table called LOAN, where the loans are stored. It has the attributes TitleNr, CopyNr, CustomerNr, Date (which is the date when ...
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MCSA: SQL Server 2012 - Microsoft Learning Campaign Factory

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Chapter_4_SQL_Access

... The four primary categories of SQL commands are DML, transaction control, DDL, and DCL commands.  Data manipulation or data modification language (DML) commands are SQL commands that retrieve, insert, update, and delete table rows in an Oracle database. The four basic DML commands are SELECT, INSER ...
Chapter 4
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... The four primary categories of SQL commands are DML, transaction control, DDL, and DCL commands.  Data manipulation or data modification language (DML) commands are SQL commands that retrieve, insert, update, and delete table rows in an Oracle database. The four basic DML commands are SELECT, INSER ...
comp426-f14-18-Databases
comp426-f14-18-Databases

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Chapter 8 - Advanced SQL
Chapter 8 - Advanced SQL

PPT - UCLA Computer Science
PPT - UCLA Computer Science

... data, and for retrieving query results. Also for accessing ...
< 1 ... 179 180 181 182 183 184 185 186 187 ... 318 >

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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