Java Database Connectivity or JDBC is an API (application program interface) specification that connects Java programs to the data present in the popular databases. The JDBC interface helps in developing access request statements in the SQL. These are then further forwarded to the program responsible for managing the database. It also returns the result through a similar interface. While coding this request access there is certain best practices that the Java programmers should be following. This API is also used for interacting with and connecting to the Database Management system. These best practices are perhaps the most important coding processes in Java as it can affect the performance of the Java apps to a large extent.
Here are some of the ways in which the best practices while developing these codes can be ensured:
Using PreparedStatement
This is one of the most popular practices suggested by the developers who have worked with the JDBC API. Definitely, the PreparedStatement deserves such appreciation owing the useful services that it offers including the prevention of SQL injection, using bind variables and precompiled SQL queries.
Disabling the auto commit mode
This process offers adequate gain in the performance of the JDBC batch update. It is recommended to run the SQL query along with the auto commit mode disabled. The reason behind such a practice is that with this mode disabled the SQL statement can be grouped in a single transaction. On the other hand, for the auto commit mode the SQL statements run in their own transaction. They are also committed as soon as the transaction is completed. Hence, it is always preferable to run the queries when this mode is disabled.
Usage of ConnectionPool
This process has been recognized often to become a standard. There are many frameworks that provide built-in connection pool facilities, like, DBCP, DBCP in Spring or if the developers are running in the managed environment including the J2EE Application Server. The reason why this was developed is because the JDBC connection creation requires longer time. This, in turn, increases the time required for a response by the creation of the caches.
JDBC Batch Update
This is another best practice that is quite popular with the developers. JDBC API is offers addBatch() process so that SQL queries can be added into the batch. There are the executeBatch() which can send the batch queries for execution. This results in mitigating the number of database roundtrip. This ensures that the performance is gained significantly. Therefore, for inserting and updating queries, the JDBC batch updates can be effectively used.
Replace the String concatenation with Bind variables
Performance can be improved only by using bind variables which enables the database to run the query that is same to the other parameters. This also helps in providing protection against the SQL injection.
PreparedStatement, Statement and Connection must be closed
JDBC Connection and classes are quite costly resources and these should be closed as well as blocked to make sure that the connections are released.
Choose a suitable JDBC driver
There are 4 kinds of JDBC drivers in Java that affect the performance of the DAO layer directly. For this season it is important to choose a suitable driver for the application.
Applying standard SQL statement
This is another best practice that must be followed so as to make sure the writing portable codes. Mostly the JDBC code is full of SQL query. As a result using the database specific search is easier in the MySQL. However, by applying the ANSI SQL or by avoiding the application of DB specific SQL, there is a surety that minimum changes will be introduced in the DAO layer in case one moves to another database.
Maintain these best practices to ensure that the Java Database Connectivity is applied through proper methods.
You can hire programmers from top java application development companies in India who can help you build products within allocated budgets and time schedules.
We provide java website development services. If you would like to hire java software developer from our team, please get in touch with us at Mindfire Solutions.
Here are some of the ways in which the best practices while developing these codes can be ensured:
Using PreparedStatement
Disabling the auto commit mode
This process offers adequate gain in the performance of the JDBC batch update. It is recommended to run the SQL query along with the auto commit mode disabled. The reason behind such a practice is that with this mode disabled the SQL statement can be grouped in a single transaction. On the other hand, for the auto commit mode the SQL statements run in their own transaction. They are also committed as soon as the transaction is completed. Hence, it is always preferable to run the queries when this mode is disabled.
Usage of ConnectionPool
This process has been recognized often to become a standard. There are many frameworks that provide built-in connection pool facilities, like, DBCP, DBCP in Spring or if the developers are running in the managed environment including the J2EE Application Server. The reason why this was developed is because the JDBC connection creation requires longer time. This, in turn, increases the time required for a response by the creation of the caches.
JDBC Batch Update
This is another best practice that is quite popular with the developers. JDBC API is offers addBatch() process so that SQL queries can be added into the batch. There are the executeBatch() which can send the batch queries for execution. This results in mitigating the number of database roundtrip. This ensures that the performance is gained significantly. Therefore, for inserting and updating queries, the JDBC batch updates can be effectively used.
Replace the String concatenation with Bind variables
Performance can be improved only by using bind variables which enables the database to run the query that is same to the other parameters. This also helps in providing protection against the SQL injection.
PreparedStatement, Statement and Connection must be closed
JDBC Connection and classes are quite costly resources and these should be closed as well as blocked to make sure that the connections are released.
Choose a suitable JDBC driver
There are 4 kinds of JDBC drivers in Java that affect the performance of the DAO layer directly. For this season it is important to choose a suitable driver for the application.
Applying standard SQL statement
This is another best practice that must be followed so as to make sure the writing portable codes. Mostly the JDBC code is full of SQL query. As a result using the database specific search is easier in the MySQL. However, by applying the ANSI SQL or by avoiding the application of DB specific SQL, there is a surety that minimum changes will be introduced in the DAO layer in case one moves to another database.
Maintain these best practices to ensure that the Java Database Connectivity is applied through proper methods.
You can hire programmers from top java application development companies in India who can help you build products within allocated budgets and time schedules.
We provide java website development services. If you would like to hire java software developer from our team, please get in touch with us at Mindfire Solutions.
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