Index

Geospatial queries are built in. No more relying on third parties for this stuff, unless you have really specific needs, or need to be ultra-accurate. That said, there's things about Mongo that are nice, but have more to do with the contrast between relational databases and document stores than with Mongo itself.

MongoDB is type of NoSQL database, which means document database. Data or records are stored like records, in JSON format. (or) MongoDB is a cross-platform, document-oriented database that provides high performance, high availability, and easy scalability.

The most recent versions of MongoDB will yield regularly during the mass update, but you're still talking about syncing gigabytes of data to the disk for one simple change. If this multi-update results in a few minutes of work, you will see timeouts on your client and random messages in the log, but there's no way to know the process until it's done.

Ideally, always have several months of “goodbye money” (known in the states by a more vulgar name). That is enough money to live on without having to take a job for a long period of time. Otherwise you’ll just have to take the very next job that comes along if you get laid off.

In the non-transactional area, often known as the analytical space, we are also seeing the cloud coming strong. It is not just the pure operational tasks being removed, even the query optimization is being automated or removed. Heck, Snowflake doesn’t even have indices.

The importance of protecting data is also getting more spotlight. Its always been a major concern but with new regulations like GDPR, companies are making major efforts to tighten things up. A DBA is critical to those efforts

Overall, just don’t look for the RDBMS product or vendor on which you have worked for few years, if you have the concepts clear then you can work for any of the available products in RDBMS and NoSQL areas with some basic training and they are all equally exciting like DB2 or more exciting than DB2 as for most of them the amount of resources available to learn are really incredible. Good luck !!

IBM Cloudant: This is a fully managed NoSQL database service that is designed for web and mobile applications. It uses Apache CouchDB as its storage engine and supports JSON data model.

What is your most current degree? Most BCA/MCA are paid lesser than their counterparts with BTech/MTech. Though there is no logic behind it but that is how it is(however it evens out with experience)

In summary, Mainframe DBAs play a critical role in ensuring the reliability and performance of mainframe databases and the systems that depend on them.

Now, there are other jobs where a DBA qualification can be very useful and not involve all this. Data Architects, Database Architects, or even application developer are roles where the knowledge of being a DBA will be useful but the core of your job description will be something else.