【正文】 s SQL statement transmitted to the database, and these statements will be sent the results of the implementation back to the user. Database can be in the same machine Up can also be another machine on the work to connect. This is known as Client / Server structure, the user39。 3) deal with the results of the database back. 2. JDBCan underlying API JDBC is an underlying API, which means that it will direct calls to SQL mands. JDBC fully qualified for this mission, but also than other database connectivity is more easily Now. It is also constructed at the same time highlevel API and database development tools. Highlevel API and database development tools should be more friendly user interface, the use of more side Then, more easily understandable. However, all this API will eventually be translated into JDBC such as the bottom of API. At present, two highlevel API based on JDBC is in development stage Paragraph. 1) SQL language embedded Java preprocessor. While the DBMS has achieved the SQL query, but the JDBC requirements of SQL statements as a string parameter transmitted to the Java way Sequence. The embedded SQL preprocessor allows a programmer to mix SQL statements: Java variables can be used in SQL statements to receive or provide the value. And the preSQL This processor will be Java / SQL mix procedures translated into the Java program with JDBCAPI. 2) implementation from the relational database to the Java type of direct mapping. Javasoft and other panies have announced plans to achieve this technology. At this object / relational Mapping table of each line will bee an example of this type, each column corresponds to the value of a property instance. Java programmers can directly operate the object。 指導教師評語： 簽字： 年 月 日 JDBC Interface Technology JDBC is a SQL statement can be used for the implementation of the JavaAPI (ApplicationProgrammingInterface Application Programming Interface). It consists of a number of Java Language class and interface ponents. JDBC for database application developers, database developers Front Desk Tools provides a standard application programming interface, So that developers can use pure Java language to prepare a plete database application. One, ODBC to JDBC course of development Speaking of JDBC, it is tempting to think of another very familiar with the word ODBC. There is no contact between them then? If there is, then between them is What kind of relationship? ODBC is the English abbreviation OpenDatabaseConnectivity. It is a used in related or not related to database management system (DBMS) to access data And implementation using C language, the standard application data ODBCAPI, applications can access the stored in a variety of database management system (DBMS) Data, regardless of what the use of each DBMS data storage format and programming interface. 1. ODBC structural model ODBC structure includes four main parts: application program interface, the drive manager, database driver and data source. Application Programming Interface: Shielded different ODBC database drivers the difference between the function call to provide users with a unified SQL programming interface. Driver Manager: In order to load the database application drives. Database drive: implementation of the ODBC function calls to provide data source specific SQL request. If necessary, the database driver will be requested to amend application Order to make the request in accordance with the relevant DBMS supported by the grammar. Data Source: by the user wants