I create a DB(Supabase) and then I made tables on Supabase PostgreSQL DB and build their relations. Now we connect DB to budibase app.
Now we get data from DB but when we fetch data from DB. It Creates connections but it would not create relations between tables. Also, change column dataType.
Screen Short of Supabase DB Tables
Screen Short of Budibase where we fetch DB
Related
I am connecting to Snowflake from Collibra through the Snowflake provided JDBC driver.
My objective is to extract tables, columns metadata of a schema in Snowflake and load that metadata into the Collibra Catalog.
However, a deeper look at the permission "select on each table to ingest" that must be given to the user who connects to snowflake is a worrisome thing for us. The technical user can select data from the tables like any other user. Is there any way to avoid the permission?
Br,
Noor.
I have DB Oracle in two clients independently with the same structures.
and I want to transfer data from each client to Central DB Oracle with new PK and FK for each one With the consistency of data in each data base according to sequences in Central DB.
Is there any tools in oracle DB or solution to doing this.
Is there a way to replicate data(like triggers or jobs) from oracle tables to postgres tables and vice versa(for different set of tables) without using external tools? Just one way replication for both the scenarios.
Just a hint:
You can think of create a DB link from Oracle to Postgres which is called heterogeneous connectivity which makes it possible to select data from Postgres with a select statement in Oracle.
Then use materialized views to schedule and store the results of those selects.
As you don't want to use any external tool otherwise the solution should have been much simpler
for 20 tables I need to replicate data from oracle to postgres. For 40 different tables, I need to replicate from postgres to oracle.
I could imagine the following setup:
For the Oracles tables that need to be accessible from Postgres, simply create foreign tables inside the Postgres server. They appear to be "local" tables in the Postgres server, but the FDW ("foreign data wrapper") will forward any request to the Oracle server. So no replication required. Whether or not this will be fast enough depends on how you access the tables. Some operations (WHERE clause, ORDER BY etc) can be pushed down to the Oracle server, some will be done by the Postgres server after all the rows have been fechted.
For the Postgres tables that need to be replicated to Oracle you could have a similar setup: create a foreign table that points to the target table in Oracle. Then create triggers on the Postgres table that will update the foreign table, thus sending the changes to Oracle.
This could all be managed on the Postgres side.
I have the following scenario and need to solve it in ORACLE:
Table A is on a DB-server
Table B is on a different server
Table A will be populated with data.
Whenever something is inserted to Table A, i want to copy it to Table B.
Table B nearly has similar columns, but sometimes I just want to get
the content from 2 columns from tableA and concatenate it and save it to
Table B.
I am not very familiar with ORACLE, but after researching on GOOGLE
some say that you can do it with TRIGGERS or VIEWS, how would you do it?
So in general, there is a table which will be populated and its content
should be copien to a different table.
This is the solution I came up so far
create public database link
other_db
connect to
user
identified by
pw
using 'tns-entry';
CREATE TRIGGER modify_remote_my_table
AFTER INSERT ON my_table
BEGIN INSERT INTO ....?
END;
/
How can I select the latest row that was inserted?
If the databases of these two tables are in two different servers, then you will need a database link (db-link) to be created in Table A schema so that it can access(read/write) the Table B data using db-link.
Step 1: Create a database link in Table A server db pointing to Table B server DB
Step 2: Create a trigger for Table A, which helps in inserting data to the table B using database link. You can customize ( concatenate the values) inside the trigger before inserting it into table B.
This link should help you
http://searchoracle.techtarget.com/tip/How-to-create-a-database-link-in-Oracle
Yes you can do this with triggers. But there may be a few disadvantages.
What if database B is not available? -> Exception handling in you trigger.
What if database B was not available for 2h? You inserted data into database A which is now missing in database B. -> Do crazy things with temporarily inserting it into a cache table in database A.
Performance. Well, the performance for inserting a lot of data will be ugly. Each time you insert data, Oracle will start the PL/SQL engine to insert the data into the remote database.
Maybe you could think about using MViews (Materialized Views) to replicate the data via database link. Later you can build your queries so that they access tables from database B and add the required data from database A by joining the MViews.
You can also use fast refresh to replicate the data (almost) realtime.
From perspective of an Oracle Database Admin this would make a lot more sense than the trigger approach.
try this code
database links are considered rather insecure and oracle own options are having licences associated these days, some of the other options are deprecated as well.
https://gist.github.com/anonymous/e3051239ba401e416565cdd912e0de8c
uses ora_rowscn to sync tables across two different oracle databases.
The database user has got two schemas. I need to read the data from a specific schema using ado.net. I am using OleDbConnection object to create the connection to database. Appreciate your answers.
Use SCHEMA_NAME.TABLE_NAME in your queries.
If you don't specify a schema, Oracle will look into the current schema. The schema is by default the connexion user (so if you connect with USER1 and query TABLE1, Oracle will look for the table USER1.TABLE1). You can change your current schema at any time during a session with:
ALTER SESSION SET CURRENT_SCHEMA=SCHEMA2;
You can also use synonyms to point to the correct table.