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This chapter reproduces the exploration process of data management technology. We have seen the outstanding application of database technology in data sharing, which separates program and data and realizes data independence. Database technology is the best solution to the problem of data management. This chapter also discusses the structure and main characteristics of the database system. Finally, using the three-tier model, this chapter further explains how to realize the data independence successfully in both logical and physical aspects.
Please consider the following questions:
1. How to understand the relationship between data and information.
2. What is structured data and unstructured data.
3. How many stages has the development of computer data management gone through? What are the characteristics of each stage?
4. What are the components of the database system? What is the core?
5. What are the characteristics of DBS?
6. What is the unified control function of database system?
7. There are three basic data models: hierarchical model, network model and relational model. Please give an example.
返回《Database Technology and Programming》慕课在线视频列表
-From the beginning: Knowledge Point Puzzle of Chapter I
-1.1 Data & Data Management
--1.1.1 Data, Information and Databases
--1.1.2 Explore Data Management
-1.2 Database System
--1.2.3 Three-tier Mode of Database
-Exercise
-【Discussion: Will the database be replaced by blockchain? 】
-Knowledge Point Puzzle of Chapter Ⅱ
-2.1 Database Design
-2.2 Conceptual Structure Design
--2.2.1 Conceptual Structure Design
-2.3 Logical Structure Design
--2.3.1 Logical Structure Design
--2.3.2 Integrity Rules of Relational Model
--2.3.3 Transforming ER Model into Relational Model
-Exercise
-【Discussion: Structured data —— Relational model, Unstructured data——? 】
-Knowledge Point Puzzle of Chapter Ⅲ
-3.1 Create Databases
-3.2 Create Tables
-3.3 Maintain Tables
-Exercise
-【Discussion: What is the referential integrity?】
-Knowledge Point Puzzle of Chapter Ⅳ
-4.1 Data Types, Constants and Variables
--4.1.1 Data Types, Constants and Variables
-4.2 Expressions
--4.2.1 Numeric & Character Expressions
--4.2.2 Relational & Logical Expressions, Operation Priority
-4.3 Functions
--4.3.3 Date/Time, Conversion and Iif Functions
-Exercise
-Knowledge Point Puzzle of Chapter Ⅴ
-5.1 Query and Query Files
--5.1.1 Data Retrieval Method and Query Files
-5.2 Select Query
-5.3 Operation Query
-Exercise
-Knowledge Point Puzzle of Chapter Ⅵ
-6.1 Summary Of SQL
-6.2 Data Definition Language
--6.2.1 SQL Definition Language
-6.3 Data Query Language
-6.4 Data Manipulation Language
--6.4.1 SQL Manipulation Language
-Exerise
-Knowledge Point Puzzle of Chapter Ⅶ
-7.1 Form Design
-7.2 Report Design
--7.2.1 Report Structure and Create Report
-Exercise
-Knowledge Point Puzzle of Chapter Ⅷ
-8.1 VBA Programming
--8.1.1 VBA Programming Environment
-8.2 Sequence Structure
-8.3 Selection Structure
--8.3.2 The “Select Case” Statement & Nested Selection Structure
-8.4 Repetition Structure
--8.4.2 The “Do While” Statement
-8.5 Functions & Procedures
--8.5.1 Functions and Procedures
--8.5.2 Parameter Transmission
-8.6 VBA Debug
-8.7 Arrays
-Exercise
-Knowledge Point Puzzle of Chapter Ⅸ
-9.1 What is OOP?
-9.2 Properties, Methods and Events
--9.2.1 Properties, Methods and Events
--9.2.2 Event Trigger Sequence
-9.3 OOP Examples
--9.3.1 Object Synchronization
--9.3.4 Connect and Access Tables
-Exercise
-Knowledge Point Puzzle of Chapter Ⅹ
-10.1 What is a Macro?
--10.1.2 Commands and Classifications of Macro
-10.2 Create Macros
--10.2.1 Add New Action to a Macro
-10.3 Debugging and Conversion of Macro
--10.3.1 Debugging and Conversion of Macro
-Exercise
-Congradulations!Puzzle complete!
-11.1 Requirement Analysis of Database Application System
--11.1.1 System Design Process
--11.1.2 System Function Introduction
-11.2 Data Layer of Database Application System
--11.2.1 Underlying Data Structure
-11.3 Realization of Database Application System
--11.3.1 Registration and Login Module
--11.3.2 Get User Identity from Login Form
-11.4 Test and Release of Database Application System
--11.4.1 Test and Release of Database Application System
-Final Exam