Can we migrate directly from postgres to Redis. I was trying with npm package
"postgres-redis" but got stuck.I have huge data stored in Postgres DB in m local, I want this data to be migrated to Redis.How this can be achieved
You can import your Postgres tables into Redis using this tool: https://github.com/Redislabs-Solution-Architects/riot
See the 'Import databases" section of the readme.
You will need to use the Postgres JDBC driver documented here : https://www.postgresql.org/docs/7.4/jdbc-use.html
Related
I referred this Documentation
https://www.javatpoint.com/talend-jdbc-connection
For how to config DB connection on Talend. In the documentation mentioned, MySQL JDBC Connector is used to connect the MySQL DB to Talend. In my case, I need to connect with Cassandra JDBC Connector is used to connect the Cassandra DB to Talend, and the connection is also established successfully.
The documentation mentioned when we right-click on the database connection it will show the popup menu. The pop-menu shows the retrieve schema option. This option is used to show the table. But when I right-click on the DB connection it's not showing a pop-menu on the Talend Open Studio. How to fix this issue.
I suspect the problem is that you're using the wrong JDBC driver although I'm unable to confirm that since you didn't actually say which one you're using.
You will need to download the Simba JDBC Driver for Apache Cassandra from DataStax Downloads in order to connect to a Cassandra cluster. Then you'll need to install the driver on to your Talend.
I don't have the detailed steps for doing that but I've previously written instructions for connecting clients like Pentaho Data Integration and DBeaver to Astra DB which is a Cassandra-as-a-service. The instructions for those should give you an idea of how to configure Talend. Cheers!
I encountered the same problem, you're supposed to make the connection under the 'NoSQL Connections' Tab since Cassandra is a NoSQL database.
I followed the instructions here
Pretty new to Databricks.
I've got a requirement to access data in the Lakehouse using a JDBC driver. This works fine.
I now want to stub the Lakehouse using a docker image for some tests I want to write. Is it possible to get a Databricks / spark docker image with a database in it? I would also want to bootstrap the database on startup to create a bunch of tables.
No - Databricks is not a database but a hosted service (PaaS). You can theoretically you can use OSS Spark with Thriftserver started on it, but the connections strings and other functionality would be very different, so it makes no sense to spend time on it (imho). Real solution would depend on the type of tests that you want to do.
Regarding bootstrapping database & create a bunch of tables - just issue these commands, like, create database if not exists or create table if not exists when you application starts up (see documentation for an exact syntax)
Am trying to connect to elasticsearch using below in Jupyter notebook
engine = create_engine("elasticsearch+https://user:pwd#host:9200/")
however it gives the error:
Can't load plugin: sqlalchemy.dialects:elasticsearch.https
Can anyone please help?
TLDR; Simply install elasticsearch-dbapi:
pip install elasticsearch-dbapi
Details:
SQLAlchemy uses "dialects" to support reading and writing to different DBMS's.
SQLAlchemy natively supports MS SQL Server, Oracle, MySQL, Postgres and SQLite as well as others. Here is the full list: https://docs.sqlalchemy.org/en/14/dialects/
Elastic is not in that list. Hence, you need to install a library that delivers the dialect for reading/writing from/to Elastic.
I have created an application from jhipster which is microservice based. I have gateway registry and application which is running on MySql database. Now I want to migrate from MySQL to Cassandra database. Can you please let me know the changes I need to make in java/class files and list of file. So far I made some changes like application-dev yml. I have this application on hibernate, ehcache etc. Changed the class name in cacheconfiguration.java. Please let me know anyother changes required to run on database.
Regards
Satyanvesh
You can use the same Java POJO classes to annotate with Spring-Cassandra or datastax Cassandra annotations. If you want to migrate your data as well export your data tables as csv from MySQL and use the COPY command in cql to copy from csv to Cassandra.
I'm on the look out for a node ORM that works well with both Oracle and PostgreSQL.
I see that Waterline and Sequelize do not have built in support for Oracle.
Sequelize-Oracle is available though.
Is there a single node ORM module that supports both Oracle and PostgreSQL ?
Please suggest.
You should use knaxjs to generate query for both Oracle and PostgreSQL. Another way is use cu8-sequelize-oracle for Oracle and sequelizejs for PostgreSQL. Thanks!