H2 Database Tutorial

• H2 Database - Rollback
  ROLLBACK is a command from the SQL grammar used to roll back the transaction to a Savepoint or to the previous transaction. By using this command, we can either roll back to the specific Savepoint or we can roll back to the previous executed transaction.
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• H2 Database - JDBC Connection
  H2 is a JAVA database. We can interact with this database by using JDBC. In this chapter, we will see how to create a JDBC connection with H2 database and the CRUD operations with the H2 database.
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• H2 Database - Savepoint
  SAVEPOINT is a command used to temporarily save the transaction. It is better to maintain savepoints in your transaction as it is helpful to roll back the transaction to the respective Savepoint whenever necessary.
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• H2 Database - Update
  The UPDATE query is used to update or modify the existing records in a table. We can use WHERE clause with UPDATE query to update the selected rows, otherwise all the rows would be affected.
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• H2 Database - Installation
  H2 is a database written in Java. We can easily embed this database to our application by using JDBC. We can run this on many different platforms or any version of Java Runtime Environment. However, before installing the database, there should be Java installed in the system.
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• H2 Database - Introduction
  H2 is an open-source lightweight Java database. It can be embedded in Java applications or run in the client-server mode. Mainly, H2 database can be configured to run as inmemory database, which means that data will not persist on the disk. Because of embedded database it is not used for production
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