SQL Server - Bài 1

Overview of SQL Server
Vu Tuyet Trinh

Hanoi University of Technology
1
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Introduction to SQL Server
Relational Database
Management System
SQL ServerClient
Results
Results
Client Application
OLAP
OLAP
OLTP
OLTP
Query
Query
P2-3
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SQL Server Goal
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Outline
Introduction to SQL Server

Relational Data Model

Exploring SQL Server Architecture

Data Access Architectures


SQL Server Services & Tools

Programming Languages

Transact-SQL (T-SQL)

CLR

SQL Server Editions

Evolution of SQL Server

Summary
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Relational Data Model
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Sub jec t
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Sub jec t
Relational Database
Entities
Attributes
Relationship
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Basic Concepts of a Relational Database
Entities
Attributes

Relations
Tables
Fields
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Basic concepts
•
Database ~ a collection of
tables.
•
Table ~ information about a
single entity
•
Primary key ~ (set of)
column(s) that uniquely
identifies a record.
•
Foreign key ~ (set of)
column(s) used to link table
together
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SuburbNameId
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Takes
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SNOSID
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Database Design: Main Ideas

Objective

Ensuring data completeness

Avoiding data redundancies

Facilitating data access

Solution

Normalization

Reducing redundancies and improving data modification
performance

Renormalizations is often done to enhance reporting performance
(at the expense of disk space and redundancy)

Referential Integrity

Maintains the logical relationships between database objects
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Example
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Outline
Introduction to SQL Server

Relational Data Model

Exploring SQL Server Architecture

Data Access Architectures

SQL Server Services & Tools

SQL Server Editions

Evolution of SQL Server

Summary