Database Management Systems ________________________________________ Database Management System is an umbrella term that refers to all sorts of completely different tools (i.e. computer programs or embedded libraries)‚ mostly working in different and very unique ways. These applications handle‚ or heavily assist in handling‚ dealing with collections of information. Since information (or data) itself can come in various shapes and sizes‚ dozens of DBMS have been developed‚ along with tons of DB
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SQL Tutorial |[pic] | SQL is a standard computer language for accessing and manipulating databases. | | |In this tutorial you will learn how to use SQL to access and manipulate data in Oracle‚ Sybase‚ SQL | | |Server‚ DB2‚ Access‚ and other database systems. | Introduction to SQL [pic] SQL is a standard computer language
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1327 IEEE TRANSACTIONS ON COMMUNICATIONS‚ VOL. 60‚ NO. 5‚ MAY 2012 Random4: An Application Specific Randomized Encryption Algorithm to prevent SQL injection Avireddy‚ S. Dept. of Inf. Technol.‚ Anna Univ.‚ Chennai‚ India Perumal‚ V. ; Gowraj‚ N. ; Kannan‚ R.S. ; Thinakaran‚ P. ; Ganapthi‚ S. ; Gunasekaran‚ J.R. ; Prabhu‚ S. Abstract—Web Applications form an integral part of our day to day life. The number of attacks on websites and the compromise of many individuals secure data are
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reference: http://www.tutorialspoint.com/sql important: constrains: SQL constraints are used to specify rules for the data in a table. If there is any violation between the constraint and the data action‚ the action is aborted by the constraint. In SQL‚ we have the following constraints: NOT NULL - Indicates that a column cannot store NULL value UNIQUE - Ensures that each rows for a column must have a unique value PRIMARY KEY - A combination of a NOT NULL and UNIQUE. Ensures that
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1/28/2015 sql lab @ home 2 | SQL LAB @ HOME SQL LAB @ HOME search Classic Flipcard Magazine Mosaic Sidebar Snapshot Timeslide sql lab @ home 12 sql lab @ home11 sql lab @ home 10 sql lab @ home 2 1. Display the details of all the customers. (Use the AdventureWorks database) select * from [Sales].[Customer] sql lab @ home 9 sql lab @ home 8 2. Display the ID‚ type‚ number‚ and expiry year of all the credit cards in the following format. (Use the AdventureWorks database) sql lab @ home 7
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Lecture-13 Structured Query Language (SQL) Introduction Commercial database systems use more user friendly language to specify the queries. SQL is the most influential commercially marketed product language. Other commercially used languages are QBE‚ Quel‚ and Datalog. Basic Structure The basic structure of an SQL consists of three clauses: select‚ from and where. select: it corresponds to the projection operation of relational algebra. Used to list the attributes desired in the
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SQL-QUERIES 1. Display all the information of the EMP table? A) select * from emp; 2. Display unique Jobs from EMP table? A) select distinct job from emp; B) select unique job from emp; 3. List the emps in the asc order of their Salaries? A) select * from emp order by sal asc; 4. List the details of the emps in asc order of the Dptnos and desc of Jobs? A)select * from emp order by deptno asc‚job desc; 5. Display all the unique job groups in the descending order? A)select distinct job from emp order
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SEQUEL SERVER 2000 _________________________________________________________________________ ➢ Microsoft SQL Server is a client/server database engine. ➢ Microsoft SQL Server is a client/server – based relational database management system. Advantages of Client-Server computing model: ✓ Cost Savings ✓ Effective use of resources ✓ Improved Productivity ✓ Data Sharing (sharing of data is possible even though the user is unaware of the actual
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Name Tables: STUDENT FACULTY CLASS ENROLL PK StuID PK FacID PK ClassID FK ClassID StuName FacName FK FacID FK StuID Major Dept Sched Grade Credits Rank Room Given the table information above‚ if you were asked to create an Access query that showed the Student Name and Grade for all students taking a class in Room H201‚ what tables would you need and how would you link them together? The tables needed include: Student‚ Class‚ Enroll These tables would be linked
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Oracle/SQL Tutorial1 Michael Gertz Database and Information Systems Group Department of Computer Science University of California‚ Davis gertz@cs.ucdavis.edu http://www.db.cs.ucdavis.edu This Oracle/SQL tutorial provides a detailed introduction to the SQL query language and the Oracle Relational Database Management System. Further information about Oracle and SQL can be found on the web site www.db.cs.ucdavis.edu/dbs. Comments‚ corrections‚ or additions to these notes are welcome. Many
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