SQL SERVER Questions And Answers What is an Entity? The basic data item stored in database is called entity. An entity can be any object‚ item‚ place‚ person‚ concept‚ or activity about which data is stored. What is an attribute? An attribute is a property of an entity. It describes a part of an entity. Entity could have one or more attributes. What is ER diagram? An Entity Relationship Diagram is diagrammatic representation of the logical structure
Premium SQL
1 SQL Structured Query Language • Standard language used to communicate with a DBMS • Language is divided into two parts o Data Definition Language (DDL) -- used to define tables in DB o Data Manipulation Language (DML) – use to manipulate data in tables Common SQL Commands (that are part of DDL) • • • • CREATE DATABASE CREATE TABLE DROP TABLE ALTER TABLE Create a new database Create a new table in a database Remove a table from a database Change the specifications of a table Common SQL Commands
Premium SQL Database
complex software systems for various domains. * Good exposure of Software Development Life Cycle methods (waterfall etc.). * Extensive experience in Design‚ Development‚ and Enhancement and Maintaining applications in Oracle 9i/10g/11g using SQL‚ PL/SQL in Windows 9x/NT/2000/XP and UNIX environments. * In-depth Knowledge of Oracle Architecture‚ Data Dictionary and DBMS Packages. * Performed a major role in database migration. * Expertise in creating database Triggers‚ Stored Procedures
Premium SQL Database management system Relational model
1. Write a database description for each of the relations shown‚ using SQL DDL. CREATE TABLE Student_T (StudentID INTEGER NOT NULL‚ StudentName VARCHAR2(25)‚CONSTRAINT Student_PK PRIMARY KEY (StudentID));CREATE TABLE Faculty_T (FacultyID INTEGER NOT NULL‚ FacultyName VARCHAR2(25)‚CONSTRAINT Faculty_PK PRIMARY KEY (FacultyID));CREATE TABLE Course_T (CourseID CHAR(8) NOT NULL‚ CourseName VARCHAR2(15)‚CONSTRAINT Course_PK PRIMARY KEY (CourseID));CREATE TABLE Qualified_T (FacultyID INTEGER NOT
Premium SQL
on the history of SQL and database developers that have to offer “Express” versions of their database. SQL that is also known as Structured Query Language‚ is the standard language used to communicate with a relational database. The model was originally developed by IBM using Dr. E.F. Codd’s paper as a model of data for large shared data bank. In 1979‚ not long after IBM’s prototype‚ the first SQL product‚ Oracle‚ was released by Relational Software‚ Incorporated. The SQL has 3 major revisions
Premium SQL Relational model
12 ASP.NET Data Entry Web Application 19 Screenshots 19 Home – Table List 19 Appointment 20 AppointmentPurchaseType 21 Client 22 Doctor 23 Practitioner 23 Product 24 Treatment 24 TreatmentAppointment 26 TreatmentQuestion 26 SQL Statements 27 Test 1: 27 Test 2: 28 Test 3: 28 Test 4: 29 Test 5: 29 Test 6: 29 Test 7: 30 Test 8: 30 Test 9: 30 Test 10: 30 Test 11: 31 Test 12: 31 Test 13: 31 References 32 Introduction This report specifies the database
Premium SQL Relational model Database
and MSsql are the two Sql Servers that are commonly used today by the programmers and other IT people. These two are the most popular choices when considering a utility for data management. Both are efficient at keeping the data organized and readily available through a user interface but they differ in many drastic areas. Both are freely accessible for running small or big databases. Even they do have the same functionality; the existence of differences of the two known Sql Servers will still be
Premium Database SQL Database management system
Analyzing the use of databases in the workplace University of Phoenix CIS/319 May 1‚ 2007� Analyzing the use of databases in the workplace A database stores keyed information in an organized and accessible manner. The size and capacity of databases can vary widely‚ from a small database used by an individual to file phone numbers‚ to an extremely large enterprise database that stores several gigabytes of information accessed by thousands of individuals. Databases are essential for almost every
Premium SQL Database Database management system
Declaring PL/SQL Variables Copyright © 2009‚ Oracle. All rights reserved. Objectives After completing this lesson‚ you should be able to do the following: • Recognize valid and invalid identifiers • List the uses of variables • Declare and initialize variables • List and describe various data types • Identify the benefits of using the %TYPE attribute • Declare‚ use‚ and print bind variables 2-2 Copyright © 2009‚ Oracle. All rights reserved. Use of Variables Variables can be used
Premium SQL Variable
MySQL Data Types In MySQL there are three main types : text‚ number‚ and Date/Time types. Text types: Data type | Description | CHAR(size) | Holds a fixed length string (can contain letters‚ numbers‚ and special characters). The fixed size is specified in parenthesis. Can store up to 255 characters | VARCHAR(size) | Holds a variable length string (can contain letters‚ numbers‚ and special characters). The maximum size is specified in parenthesis. Can store up to 255 characters. Note: If you
Premium SQL