"数据库系统基础教程第七章答案及示例"

reate TABLE Movies ( title CHAR(100), year INT, length INT, genre CHAR(10), studioName CHAR(30), producerC The seventh chapter of the database system fundamentals tutorial focuses on creating and utilizing tables for storing data in a database management system. In this chapter, we learn the syntax and structure of the SQL CREATE TABLE statement, which is used to define the structure of a new table in a database. In the provided document "数据库系统基础教程第七章答案.docx", we are given an example of creating a table named "Movies" with columns for the movie's title, year of release, length, genre, studio name, and producer. The table is created using the following SQL statement: CREATE TABLE Movies ( title CHAR(100), year INT, length INT, genre CHAR(10), studioName CHAR(30), producerC Each column in the table is defined by specifying its name and data type. For example, the "title" column is defined as a CHAR(100) data type, indicating that it can store a string of up to 100 characters. Similarly, the "year" column is defined as an INT data type, indicating that it can store integer values for the year of release. In addition to defining the columns of the table, we can also specify constraints such as primary keys, foreign keys, and check constraints to enforce data integrity and ensure the consistency of the data stored in the table. These constraints help prevent errors and ensure the accuracy of the data stored in the database. Overall, the seventh chapter of the database system fundamentals tutorial provides a comprehensive overview of how to create tables in a database management system using SQL. By understanding the syntax and structure of the CREATE TABLE statement, database administrators and developers can effectively design and maintain databases to store and manage data efficiently.