09 - SQL basics, including scripts and CGI
... SQL (Structured Query Language) is a database sublanguage for querying and modifying relational databases. It was developed by IBM Research in the mid 70's and standardized by ANSI in 1986. Terminology ...
... SQL (Structured Query Language) is a database sublanguage for querying and modifying relational databases. It was developed by IBM Research in the mid 70's and standardized by ANSI in 1986. Terminology ...
Accessing mySQL database
... if ($num > 0) { while ($counter < $num) { echo mysql_result($result, $counter, "emp_id"); ...
... if ($num > 0) { while ($counter < $num) { echo mysql_result($result, $counter, "emp_id"); ...
Chapter 1
... Systems (continued) • As number of files increased, file systems evolved – Each file used its own application program to store, retrieve, modify data – Each file owned by individual or department that commissioned its creation ...
... Systems (continued) • As number of files increased, file systems evolved – Each file used its own application program to store, retrieve, modify data – Each file owned by individual or department that commissioned its creation ...
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Introduction to PL/SQL Lecture 1 [Part 1]
... triggering event. This is the default. For each row: the trigger body executes once for each row affected by the triggering event. When the trigger can be fired Relative to the execution of an SQL DML statement (before or after or instead of it) Exactly in a situation depending on specific sys ...
... triggering event. This is the default. For each row: the trigger body executes once for each row affected by the triggering event. When the trigger can be fired Relative to the execution of an SQL DML statement (before or after or instead of it) Exactly in a situation depending on specific sys ...
Chapter 1
... Systems (continued) • As number of files increased, file systems evolved – Each file used its own application program to store, retrieve, modify data – Each file owned by individual or department that commissioned its creation ...
... Systems (continued) • As number of files increased, file systems evolved – Each file used its own application program to store, retrieve, modify data – Each file owned by individual or department that commissioned its creation ...
Chapter 1
... Systems (continued) • As number of files increased, file systems evolved – Each file used its own application program to store, retrieve, modify data – Each file owned by individual or department that commissioned its creation ...
... Systems (continued) • As number of files increased, file systems evolved – Each file used its own application program to store, retrieve, modify data – Each file owned by individual or department that commissioned its creation ...
Data hierarchy in Oracle
... • Try to match the max capacity of your storage device to limit I/O operations – eg: minimal read size of OS (64K?) ...
... • Try to match the max capacity of your storage device to limit I/O operations – eg: minimal read size of OS (64K?) ...
Document
... Sequential files contains records that are stored and processed in sequential order Random access files are organized so you can access a record by specifying its record number Database is one or more files that help make queries Relational database organized in tables and rows ...
... Sequential files contains records that are stored and processed in sequential order Random access files are organized so you can access a record by specifying its record number Database is one or more files that help make queries Relational database organized in tables and rows ...
Physical Database Design
... Suppose that contracts with value > 10000 are subject to different rules. This means that queries on Contracts will often contain the condition val>10000. One way to deal with this is to build a clustered B+ tree index on the val field of Contracts. A second approach is to replace contracts by two n ...
... Suppose that contracts with value > 10000 are subject to different rules. This means that queries on Contracts will often contain the condition val>10000. One way to deal with this is to build a clustered B+ tree index on the val field of Contracts. A second approach is to replace contracts by two n ...
File - Malak AL
... Keys (cont’d.) • Nulls – No data entry at all .It does not mean zero or space – Not permitted in primary key to maintain entity integrity – Should be avoided in other attributes – If they are used improperly they Can represent: • An unknown attribute value • A known, but missing, attribute value • ...
... Keys (cont’d.) • Nulls – No data entry at all .It does not mean zero or space – Not permitted in primary key to maintain entity integrity – Should be avoided in other attributes – If they are used improperly they Can represent: • An unknown attribute value • A known, but missing, attribute value • ...
0168 - Parallel Processing Benchmarks
... 2. Provided audit of 2 invoices that were archived from 3 different tables (AP_INVOICES_ALL, AP_INVOICE_PAYMENTS_ALL, and AP_INVOICE_DISTRIBUTIONS_ALL). Data Archive's parallel processing utilizes Oracle database features ("Parallel Query" and "Parallel DML") and supplements them by adding performan ...
... 2. Provided audit of 2 invoices that were archived from 3 different tables (AP_INVOICES_ALL, AP_INVOICE_PAYMENTS_ALL, and AP_INVOICE_DISTRIBUTIONS_ALL). Data Archive's parallel processing utilizes Oracle database features ("Parallel Query" and "Parallel DML") and supplements them by adding performan ...
Server Intro
... • If an http request is for a file with .html extension, server simply returns that file • However, If the request is for a .php file: • Server reads the file to see if any script code (PHP) is embedded in it • If there is PHP code, server executes the code and sends whatever is generated • PHP code ...
... • If an http request is for a file with .html extension, server simply returns that file • However, If the request is for a .php file: • Server reads the file to see if any script code (PHP) is embedded in it • If there is PHP code, server executes the code and sends whatever is generated • PHP code ...
Chapter 3
... – Cannot be implemented as such in the relational model – M:N relationships can be changed into 1:M relationships ...
... – Cannot be implemented as such in the relational model – M:N relationships can be changed into 1:M relationships ...
MCITP Administrator: Microsoft SQL Server 2005 Database
... • If upgrading from SQL Server 7.0 the upgraded instance must be a default instance. • If only one instance is planned it should be a default instance • If supporting slinet connectiosn from SQL server 7.0 use a default instance • Any application installing SQL Servr Express Edition should do so as ...
... • If upgrading from SQL Server 7.0 the upgraded instance must be a default instance. • If only one instance is planned it should be a default instance • If supporting slinet connectiosn from SQL server 7.0 use a default instance • Any application installing SQL Servr Express Edition should do so as ...
Slide 1 - UMM Directory
... Referential Integrity (1 of 2) • Access automatically implements a form of data validation during data entry • Can enter a record in the “one” table, but not in the “many” table if record contains an invalid value for the foreign key • This ensures related tables are consistent with one another. ...
... Referential Integrity (1 of 2) • Access automatically implements a form of data validation during data entry • Can enter a record in the “one” table, but not in the “many” table if record contains an invalid value for the foreign key • This ensures related tables are consistent with one another. ...
Kite - Pages - University of Wisconsin
... – performs some automatic preprocessing – then immediately allows keyword querying ...
... – performs some automatic preprocessing – then immediately allows keyword querying ...
Physical Database Design
... Advantages of Partitioning: Records used together are grouped together Each partition can be optimized for performance Security, recovery Partitions stored on different disks: contention Take advantage of parallel processing capability Disadvantages of Partitioning: Slow retrievals acros ...
... Advantages of Partitioning: Records used together are grouped together Each partition can be optimized for performance Security, recovery Partitions stored on different disks: contention Take advantage of parallel processing capability Disadvantages of Partitioning: Slow retrievals acros ...
JDBC - UNL CSE
... 1. Load the database JDBC driver Note: your particular driver (.jar file) must be in the class or build path of your project 2. Make a connection to the database 3. Formulate your query(ies) & prepare your statement (set parameters) 4. Execute your query 5. If its a SELECT query: 5.1 Get your result ...
... 1. Load the database JDBC driver Note: your particular driver (.jar file) must be in the class or build path of your project 2. Make a connection to the database 3. Formulate your query(ies) & prepare your statement (set parameters) 4. Execute your query 5. If its a SELECT query: 5.1 Get your result ...
Getting Started with Databases and Transact
... Ways to implement the external interface to the SQL Server Interface into the storage engine, composed of services to interact with the underlying database storage components and features Core of SQL Server, a highly scalable and available service for data storage, processing, and security Operating ...
... Ways to implement the external interface to the SQL Server Interface into the storage engine, composed of services to interact with the underlying database storage components and features Core of SQL Server, a highly scalable and available service for data storage, processing, and security Operating ...
Narendra`s Resume - Trelco Limited Company
... contents and even the glossary also providing a search key which will be helping a user to search through out the entire book on any topic. While converting the doc file to a html page the process will come across picture files which will be copied and stored in a one single folder (all the picture ...
... contents and even the glossary also providing a search key which will be helping a user to search through out the entire book on any topic. While converting the doc file to a html page the process will come across picture files which will be copied and stored in a one single folder (all the picture ...
Project logo (optional)
... The project data explorer is a prototype visualiser. The explorer provides three windows, one each for listing projects, jobs and facts. The “projects” window lists the names and start dates for all projects in the database. The user can select one of the projects, and the list of associated jobs (n ...
... The project data explorer is a prototype visualiser. The explorer provides three windows, one each for listing projects, jobs and facts. The “projects” window lists the names and start dates for all projects in the database. The user can select one of the projects, and the list of associated jobs (n ...
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"".