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How to merge two databases in PostgreSQL?
First, load the tables into two separate schemas in the same database. Then you can merge the two, by prioritizing db2 over db1.
How to dump D1 and D2 in PostgreSQL?
Dump d1 and d2 to the respective files d1.sql.gz and d2.sql.gz. This is the command I used to dump: Create a new, empty database on a local PostgreSQL server. Record the value printed (4 in this example).
How can I migrate data from one Org1 table to another?
Using simple INSERT INTO main.table SELECT * FROM org1.table you can migrate data from one database to another. You can check for data integrity using joins between similar tables in different schemas. And if you like you can go on with this setup without any merging until you decide is the best time to do so.
How to create new empty database in PostgreSQL?
With that you can create a new empty database as you suggested in your post (#1) and create a different schema per “organisation” in which you’ll have foreign tables corresponding to that “organisation” database. It’ll be like having all your databases in one.
Which is better PostgreSQL or multiple schemas?
We are in the middle of deciding on how we want to setup our databases. We are running a postgresql database server which all services in the cluster will use. The debate right now is whether to give each service its own schema in a single database or to give each service its own database. We just aren’t sure which is the better solution for us.
When to use multiple schemas in a database?
If the projects or users are interrelated and should be able to use each other’s resources they should be put in the same database, but possibly into separate schemas. Schemas are a purely logical structure and who can access what is managed by the privilege system.
How is PostgreSQL used to host multiple services?
We are in the process of building a cluster for our hosted services at work, the final product will be used to host multiple separate services. We are in the middle of deciding on how we want to setup our databases. We are running a postgresql database server which all services in the cluster will use.