6 | Database Transaction Replayer. The tool's main class is com.objectdb.Replayer and the required argument is the path to the database |
6 | Database Replication and Clustering master-slave replication, the master node manages the main (master) database, which supports Read |
6 | JPA Query Structure (JPQL / Criteria)The syntax of the Java Persistence Query Language (JPQL) is very similar to the syntax of SQL. Having an SQL-like syntax in JPA queries is an important advantage because SQL is a very powerful query language and many developers are already familiar with it. The main difference between SQL and JPQL |
6 | What is the Java Persistence API (JPA)?The Java Persistence API (JPA) is a standard API for accessing databases from within Java applications. The main advantage of JPA over JDBC (the older Java API for interacting with databases) is that in JPA data is represented by classes and objects rather than by tables and records as in JDBC |
6 | Literals in JPQL and Criteria Queries Literals The main method, literal, takes a Java object and returns a literal expression. For example |
1 | Step 2: Define a JPA Entity Class) - the Point class is an ordinary Java class. The next step is adding to the project a Main class |
1 | Step 2: Define a JPA Entity Class. But nevertheless, this class is a valid ObjectDB entity class, despite the warning. The next step is adding a Main |
1 | JPA Web App Tutorial - NetBeans Project Run > Run Main Project... (or F6). Choose or define the server and click OK. If a browser is not opened - open it at http://localhost:8080/Guestbook/. |
1 | Step 1: Create a Maven Web Project that was created in the project main folder: Note: You should verify now that Maven Integration for WTP |
1 | Step 6: Set the Spring XML and click Next. Enter spring-servlet as the File Name. The Folder should be src\main\webapp\WEB-INF |
