Chapters 5 through 10 cover database programming. We start in Chapter 5 with an abstract treatment of queries in the relational model, introducing the family of operators on relations that form “relational algebra." Chapters 6 through 8 are devoted to SQL programming. As we mentioned, SQL is the dominant query language of the day.
Chapter 6 introduces basic ideas regarding queries in SQL and the expression of database schemas in SQL. Chapter 7 covers aspects of SQL concerning constraints and triggers on the data.
Chapter 8 covers certain advanced aspects of SQL programming. First, while the simplest model of SQL programming is a stand-alone, generic query interface, in practice most SQL programming is embedded in a larger program that is written in a conventional language, such as C. In Chapter 8 we learn how to connect SQL statements with a surrounding program and to pass data from the database to the program's variables and vice versa. This chapter also covers how one uses SQL features that specify transactions, connect clients to servers, and authorize access to databases by nonowners.
请热心的朋友不要直接复制到网上的翻译器翻译,那是很不准确也是很不通畅的,我求是是自己翻译的,谢谢合作!
参考资料:OK