'Ename' diaporamas de présentation

Schema Refinement and Normal Forms

Schema Refinement and Normal Forms. Review: Database Design. Requirements Analysis user needs; what must database do? Conceptual Design high level description (often done w/ER model) Logical Design translate ER into DBMS data model Schema Refinement consistency, normalization

1.78k views • 134 slides

Displaying Data from Multiple Tables (Join ) Sub queries Creating Sequences Creating Views

CH3 Part2. Displaying Data from Multiple Tables (Join ) Sub queries Creating Sequences Creating Views Dynamic SQL Queries Controlling User Access. Displaying Data from Multiple Tables (Join). Objectives. After completing this lesson, you should be able to do the following:

1.14k views • 96 slides

Introduction to Oracle

Introduction to Oracle. SQL and PL/SQL. ?? : Peter. Writing Basic SQL Statements. Basic SELECT Statement. SELECT [DISTINCT] {*, column [ alias ],...} FROM table;. SELECT identifies what columns. FROM identifies which table. Selecting All Columns. SQL> SELECT *

1.15k views • 94 slides

Functional Dependencies and Normalization for Relational Databases

Functional Dependencies and Normalization for Relational Databases. Relational Database Designs. There are many different relational database "designs" (schemas) that can be used to store the relevant mini-world information. Can one schema be much better than another?.

1.1k views • 85 slides

Enhanced Guide to Oracle 10g

Enhanced Guide to Oracle 10g. Chapter 3: Using SQL Queries to Insert, Update, Delete, and View Data. Writing Basic SQL Statements. Objectives. After completing this lesson, you should be able to do the following: List the capabilities of SQL SELECT statements

653 views • 52 slides

PMIT-6102 Advanced Database Systems

PMIT-6102 Advanced Database Systems. By- Jesmin Akhter Assistant Professor, IIT, Jahangirnagar University. Schedule. Continue from 24.01.2014-13.06.2014 Every week Friday From 10 :30 A M-1:00 PM. NB: Schedule may change. Grading Policy. Attendance =10% Exercise test =5%

669 views • 50 slides

Data Retrieval

Data Retrieval. DEPT. DEPTNO DNAME LOC --------- -------------- ---------- 10 ACCOUNTING NEW YORK 20 RESEARCH DALLAS 30 SALES CHICAGO 40 OPERATIONS BOSTON. SALGRADE. GRADE LOSAL HISAL

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Restricting and Sorting Data

483 views • 42 slides

Normalization

Normalization . IS 320: Introduction to Database Hatoon AlSagri. Informal Design Guidelines for Relational Databases. R elational database design: The grouping of attributes to form "good" relation schemas Two levels of relation schemas: The logical "user view" level

704 views • 40 slides

ACTION QUERIES ( SQL COMMANDS )

ACTION QUERIES ( SQL COMMANDS ). STRUCTURED QUERY LANGUAGE. ACTION QUERIES (SQL COMMANDS). DATA DEFINITION LANGUAGE DATA MANIPULATION LANGUAGE TRANSACTION CONTROL LANGUAGE DATA CONTROL LANGUAGE. DATA DEFINITION LANGUAGE (DDL ). CREATE ALTER DROP TRUNCATE.

718 views • 39 slides

Chapter Outline

Al- Maarefa College for Science and Technology INFO 232: Database systems Chapter 6 Normalization for Relational Databases Instructor Ms. Arwa Binsaleh. Chapter Outline. Informal Design Guidelines for Relational Databases Functional Dependencies (FDs)

500 views • 38 slides

Restricting and Sorting Data

454 views • 34 slides

Restricting and Sorting Data

Restricting and Sorting Data. Objectives. After completing this lesson, you should be able to do the following: Limit the rows retrieved by a query Sort the rows retrieved by a query. EMP. EMPNO ENAME JOB ... DEPTNO 7839 KING PRESIDENT 10 7698 BLAKE MANAGER 30

359 views • 28 slides

Displaying Data from Multiple Tables

Displaying Data from Multiple Tables. Objectives. After completing this lesson, you should be able to do the following: Write SELECT statements to access data from more than one table using equality and nonequality joins

336 views • 28 slides

2 Restricting and Sorting Data

404 views • 27 slides

Restricting and Sorting Data

Restricting and Sorting Data. Objectives. After completing this lesson, you should be able to do the following: Limit the rows retrieved by a query Sort the rows retrieved by a query. EMP. EMPNO ENAME JOB ... DEPTNO 7839 KING PRESIDENT 10 7698 BLAKE MANAGER 30

334 views • 27 slides

Restricting and Sorting Data

Restricting and Sorting Data. Objectives. After completing this lesson, you should be able to do the following: Limit the rows retrieved by a query Sort the rows retrieved by a query Group the rows reporting on summary type data. EMP. EMPNO ENAME JOB ... DEPTNO

363 views • 26 slides

Distributed Database Systems

Distributed Database Systems. Definitions: Distributed Database : is a collection of multiple logically interrelated databases distributed over a computer network.

520 views • 25 slides

Displaying Data from Multiple Tables

Displaying Data from Multiple Tables. Objectives. After completing this lesson, you should be able to do the following: Write SELECT statements to access data from more than one table using equality and nonequality joins

326 views • 22 slides

Displaying Data from Multiple Tables

Displaying Data from Multiple Tables. Objectives. After completing this lesson, you should be able to do the following: Write SELECT statements to access data from more than one table using equality and nonequality joins

279 views • 21 slides