what is database schema?
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Database schema holds information, such as primary key, for the tables.
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A database is an organized collection of data. The term originated within the computer industry, but its meaning has been broadened by popular use, to the extent that the European Database Directive (which creates intellectual property rights for databases) includes non-electronic databases within its definition. This article is confined to a more technical use of the term; though even amongst computing professionals, some attach a much wider meaning to the word than others.\n\nOne possible definition is that a database is a collection of records stored in a computer in a systematic way, such that a computer program can consult it to answer questions. For better retrieval and sorting, each record is usually organized as a set of data elements (facts). The items retrieved in answer to queries become information that can be used to make decisions. The computer program used to manage and query a database is known as a database management system (DBMS). The properties and design of database systems are included in the study of information science.
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check the following site\n\nhttp://www.schools.ash.org.au/olshc/infotech/dbdesign.htm\n\nif you want more search in google "database design".
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SQL stands for Structured Query Language.... it is the language used to create, modify and report relational databases. It is not specific to an implementation of the language.... MySQL is a relational database manager that uses SQL to manage and use the databases. Just as Microsoft SQL Server does the same on a Windows NT Server. However, MySQL lacks the GUI tools that shield you from the complexities of having to type out all the SQL commands.
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Queries can be a very complex things, involving one or more tables of the data-base.\n\nBut any example is specific to the DataBase structure you have. You can read a lot about SQL queries in the "mysql" (http://www.mysql.com/) documentation.
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SQL Server .. is the host machine running a DB that uses SQL language as its DB language (concerning DB query and other related DB activities)\n\nSQL is an open source programming language that is used to create, manipulate, store, or quesry a database and it stands for the term (Structured Query Language) meaning it's an open source language -- that any company can use it without paying any charge in accordance with such use! .. yes just like the network protocol (TCP/IP) \n\nMany Large Database companies used this language to create a very powerful and flexiable database systems of course Oracle, IBM, Microsoft, and many others have a very well known systems for example : Oracle applications, Microsoft SQL, DB2, sybase, mysql ... etc.\n\nWhat makes it special is that you feel you set the criteria of the data you want to retrive out of the database like you are talking our easy english language while typing the query! .. that really helped it to spread out so quickly and effeciently.\n\nAnd example that i am sure you used it at lest once .. when you are looking for something to get it downloaded to your computer using one of the free available search engins on the internet (like Yahoo, Webcrawler, Directhit, Google, etc..) the key word you type in the search blank is excatly the criteria that will be used to query Yahoo's or google's Very large DB that contains Millions of websites! so those Yahoo, and Google and any other search engins have large computer servers holding a very neat DB that contains the data (in this case the websites) these computer servers act as data warehouses .. and once you place what you are looking for .. their systems translate it into a simple query and the results page just shows what you have been looking for BASED ON WHAT YOU USED AS A KEY WORD .. so if you didn't get what you were looking for .. don't blaim those guys . just change your keywword and everything will be fine.
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What you need to dig into is SQL for database inquiry and update.
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click here:http://en.wikipedia.org/wiki/Database_management_system
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Actually, a database system consists of multiple datafiles which are located in one or more filesystem(s)
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It is a database software.
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collection of programs that enables you to store, modify, and extract information from a database. There are many different types of DBMSs, ranging from small systems that run on personal computers to huge systems that run on mainframes. The following are examples of database applications: \ncomputerized library systems \nautomated teller machines \nflight reservation systems \ncomputerized parts inventory systems
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Standard Query Language is a datbase. Database is used for storing data. This data is inturn accessed by a front-end tool.
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sql server is an application that runs on a server. It provides to a developer and easy way to implement database functions. Yes, it is faster than doing it with other methods.
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fundamental of database designs - ramez elmasri & shamkant b. navathe
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Data rule or restriction that is enforced within the database rather than at application or object level. The following constraint types are available in Oracle: primary key, unique key, foreign key (references), check, NOT NULL, etc.
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It's a synchronized database distributed accross multiple servers. \n\nhttp://en.wikipedia.org/wiki/Distributed_database\n\nGoogle is your friend.
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There is two basic concepts with database security:\n\n1. Access Control \n\nOnly let those who you want to have access and permissions to do what you want to allow them to do.\n\n2. Data Security\n\nIf data is obtained from the database, to what extent is the data protected.  Encryption is the concept here.