About data integrity

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5

JPA and handling large data sets

. But exporting large binary data sets is very slow. To avoid memory problems the binary data type is read step by step during the export with the  query/setFirstResult() & setMaxResults(). But for large data sets the way is slow. We have an own entity for storing binary data (pictures, documents). Hint
Forum
5

ObjectDB data migration/extraction

Hi What is the way to extract data from ObjectDB to relational databases (Oracle). We need to feed an Oracle database with data for reporting/datawarehosing. Should JPQL be used or is there some tools to do it. Thanks. Currently there is no such tool, so you will have to migrate data using
Forum
5

Import data from MySQL

mysql data into objectdb? Currently to import data from other databases to ObjectDB you will have to write your own conversion program. If you use JPA with MySQL you can retrieve old data from MySQL ... . An automatic data conversion utility is expected to be implemented as part of the RDBMS-ObjectDB
Forum
5

index - data rewrite

Hi we have found that applying indexes on an existing table erases the data. Are we doing ... it doesn't work well in some cases. Please provide more information. Please check carefully if data ... (without declaring the schema change)? What data is missing? Complete objects? specific fields in
Forum
5

Query vs Extent for retrieving data

I'm running into a problem where data that is retrieved via a Query comes out null, but when I ... explorer that all of the data is there. If I call Extent extent =     pm.getExtent(PositionReportManagerBean.class, true); I get an Extent back with all of the data as I
Forum
5

Retrieve data of all entity classes in a single query

I have in an objectdb file 10 Entity Classes with some data in each (Athlete, Trainer, Stadium etc) This is the code I use to retrieve all Managed Types and data for the Athlete class Metamodel ... to get data of all classes without writing down 10 different queries (i.e. using the for loop)? I tried
Forum
5

java.lang.ClassCastException in OSGi runtime when loading data from DB

ClassCastExceptions on my "entity" classes when I try to read data from the DB. In a very old (2011?) forum ... . The entity obviously has to get loaded by all bundles in order to manipulate the data. This is the code ... doubling the classes and having to move data around between the Entities and DTOs. Many thanks in
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5

Data migration from SQLServer to ObjectDB

Hi, could someone recommend a good tool to use for data migration from SQLServer to ObjectDB. Unfortunately there is currently no such automatic tool. Using a JPA ORM library (e.g. Hibernate or EclipseLink) you can write your own conversion program that retrieves data from the SQLServer database as
Tutorial
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Step 6: Design a BIRT Report Table

. Set the column number to 2, number of details to 1, select the data set (e.g. Points by X) in the third field and click OK. Fill the table with data by dragging the x and y columns from the data set in the [Data Explorer] window (under the data set node) and dropping them on the second table row
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5

data protection method in ObjectDB Embedded Mode

I am new in ObjectDB and i need to understand How is data protection in ObjectDB Embedded Mode without using  username or password thanks The way to keep an ObjectDB database encrypted is simply to store it on an encrypted drive. Modern operating systems support encryption of complete drives