13. Universal replication

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WEBDEV concepts

Part 5 - Databases

13. Universal replication

1. Analysis: Database structure

2. The analysis in practice

3. The various types of accessible files

4. HFSQL Classic

5. HFSQL Client/Server

6. HFSQL Client/Server clusters

7. HFSQL: the physically created files

8. Associating controls with data

9. The queries

10. The embedded queries

11. The Table/Looper controls

12. Retrieving data from a site

13. Universal replication

14. 3-tier architecture

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13. Universal replication

Table of contents

The universal replication is used to update databases of identical format or databases of different formats (HFSQL Classic, Oracle, SQL Server, ...). You can for example perform a synchronization between a HFSQL Classic database and an Oracle database.

The universal replication is using a centralized model: all databases are synchronized with a master database. Then, the master database applies the modifications to the other databases.

The synchronization can be adapted to special cases. For example, you have the ability to retrieve the records regarding a specified product or the records created on a specific date, manage the conflicts, ...

These adaptations must be done by programming with HRplFilterProcedure.

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Last update: 05/14/2020

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