99 | Java 8 time APIJava 8 time API |
20 | queries more than 10 times slower using 2.8.1 versus 2.7.6 to again and again transfer this huge database, we are a bit under time pressure hgzwicker Hans-Georg Zwicker |
19 | Query Parameters in JPA with different parameter values to retrieve different results. Running the same query multiple times ... multiple times in the query string. A query can be run only after setting values for all its parameters ... for more details. Parameters vs. Literals Following is a third version of the same method, this time |
16 | Privacy Policy (e.g. IP address), unique device identifiers, browser type, browser version, the time and date of Your visit, the pages of our Website that You visit and Your actions on these pages, and the time ... and to avoid You having to re-enter your preferences every time You use the Website. Analytics |
16 | Literals in JPQL and Criteria Queries are more generic and efficient because they can be compiled once and then run many times with different parameter ... equivalent. Date and Time Literals JPQL follows the syntax of SQL and JDBC for date literals: Date - {d 'yyyy-mm-dd'} - for example: {d '2019-12-31'} Time - {t 'hh:mm:ss'} - for example: {t '23:59:59 |
14 | Index Definition one. This may take a significant amount of time if many entity objects have to be examined. Using proper indexes ... . Index management introduces overhead in terms of maintenance time and storage space, so deciding ... , java.sql.Date, java.sql.Time, java.sql.Timestamp. Any enum type. Reference to an entity object |
14 | What are the main benefits of using ObjectDB?By using ObjectDB you can reduce development time and costs and improve your application performance. Reducing Development Time and Costs ObjectDB makes database programming easier and faster ... to shorter time to market and saving in the total development time and costs. Improving Performance |
14 | JPA Primary Key. java.lang.String. java.util.Date, java.sql.Date, java.sql.Time, java.sql.Timestamp. Any enum type ... . This is especially useful when using queries that return large result sets. As an example, consider a real time ... is represented by an Event entity object that holds time, sensor ID and additional details. Suppose |
1 | [ODB1] Chapter 5 - JDO Connections time this method is called, a PersistenceManager instance representing a connection to the database ... of the PersistenceManagerFactory at the time of this operation are used to initialize the new ... to be completed, using the temporary file, the next time the database is opened. This feature |
1 | [ODB1] Chapter 6 - Persistent Objects, every transient object that, at commit time, is reachable from a persistent object (using persistent ... it. Therefore, for efficiency sake, it is recommended to avoid time consuming operations in no-arg ... are usually more efficient in terms of execution time and database space |
