What is jdbc in java

The content of this article is to introduce what jdbc is in java, let everyone understand the use of jdbc, and the steps for jdbc to connect to the database. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

What is jdbc? What functions does it have?

jdbc stands for Java database connection. is an application programming interface (API) specification for connecting programs written in Java to data in popular databases. It allows programmers to connect to and interact with the database. It provides methods to query and update data in the database through SQL update statements such as CREATE, UPDATE, DELETE and INSERT, and query statements such as SELECT.

Simply put: jdbc is the Java API used to connect and execute database queries.

jdbc helps us write Java applications that manage these three programming activities:

1. Connect to a data source, such as a database

2. Send query and update statements to the database

3, retrieve and process the results received from the database to answer your queries

In addition, jdbc can run stored procedures. And like Java, jdbc is compatible with many platforms such as Unix and MAC OS.

jdbc driver

The JDBC API uses Java standard classes and interfaces to connect to the database. In order to connect a Java application to a specific database server using jdbc, a JDBC driver is required that supports the JDBC API of that database server. There are four types of JDBC drivers:

1, JDBC-ODBC Bridge driver

2, Native-API driver

3, Network Protocol driver

4. Native Protocol Driver

jdbc connection database

To establish a connection between a Java application and a database, JDBC follows The following steps:

1. Load the driver: The driver provides a connection to the database.

2. Create a connection: After loading the driver, the next step is to create a connection. The connection object uses a URL in the specified format, which includes the computer name, port number, and database name. It communicates with database objects.

3. Execute SQL statement: An object is required to construct the SQL statement.

4. Return the result set: retrieve and operate the database query. Records can be accessed from the first to the last row of the database.

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