Oracle APEX (or Oracle Application Express) is an online low-code application builder that allows users to develop a database-drive application, customize the application's UI, and then give their users access to the application via URL. Oracle APEX includes a suite of pre-built productivity applications and examples, such as a Survey Builder, Bug Tracking, P-Track project management, etc
Apache Cassandra is a NoSQL database and well suited where you need highly available, linearly scalable, tunable consistency and high performance across varying workloads. It has worked well for our use cases, and I shared my experiences to use it effectively at the last Cassandra summit! http://bit.ly/1Ok56TK It is a NoSQL database, finally you can tune it to be strongly consistent and successfully use it as such. However those are not usual patterns, as you negotiate on latency. It works well if you require that. If your use case needs strongly consistent environments with semantics of a relational database or if the use case needs a data warehouse, or if you need NoSQL with ACID transactions, Apache Cassandra may not be the optimum choice.
If you need to develop an application very quickly, without unnecessary lengthy specifications or business requirements, something you need right away, while utilizing all the capabilities of the Oracle database, APEX is the right choice. Thanks to the many components you use from the vast Oracle APEX library, working with this tool is exceptionally pleasant, fast, and effective.
Continuous availability: as a fully distributed database (no master nodes), we can update nodes with rolling restarts and accommodate minor outages without impacting our customer services.
Linear scalability: for every unit of compute that you add, you get an equivalent unit of capacity. The same application can scale from a single developer's laptop to a web-scale service with billions of rows in a table.
Amazing performance: if you design your data model correctly, bearing in mind the queries you need to answer, you can get answers in milliseconds.
Time-series data: Cassandra excels at recording, processing, and retrieving time-series data. It's a simple matter to version everything and simply record what happens, rather than going back and editing things. Then, you can compute things from the recorded history.
Cassandra runs on the JVM and therefor may require a lot of GC tuning for read/write intensive applications.
Requires manual periodic maintenance - for example it is recommended to run a cleanup on a regular basis.
There are a lot of knobs and buttons to configure the system. For many cases the default configuration will be sufficient, but if its not - you will need significant ramp up on the inner workings of Cassandra in order to effectively tune it.
Can't think of any - the Application Express development team does a fantastic job adopting and supporting emerging trends with each new release.
Requires Oracle RDBMS; i.e., is not portable to other RDBMS platforms. On the surface this may seem like a con but it is as it should be - Oracle database is best RDBMS available and tight integration with Oracle RDBMS promotes creation of reliable performant apps.
I would recommend Cassandra DB to those who know their use case very well, as well as know how they are going to store and retrieve data. If you need a guarantee in data storage and retrieval, and a DB that can be linearly grown by adding nodes across availability zones and regions, then this is the database you should choose.
I felt very comfortable using Oracle Application Express from the start. I designed my data model and quickly developed the basic CRUD pages for master tables. Then I designed the main functionality and was able to test and deploy it in a couple of days work. I will probably share the app with other members of the team and continue adding some features in the short term.
Oracle APEX is an ultra flexible, low code platform having a great easy of use, superior customization capabilities, scalable and provides a very good application and data security. It also has lot of AI capabilities as well as modern features such as GeoLocation maps, Automation capabilities, Workflow approval features and Mobile application capabilities using PWA like features.
Very active and knowledgeable community support includes quick and helpful responses from the Oracle employees on the product development team. I've never had to raise an official support request - everything is dealt with via forums and user groups - or via direct emails. The supposrt commuinty is one of the great things about Apex.
Using it on the cloud is really simple, the entire process of configuring and provisioning an Oracle Database takes only a few minutes (less than 10) and then Oracle APEX is already deployed on the database, so you just have to start using it. I would strongly recommend using APEX on Oracle Cloud Free Tier.
We evaluated MongoDB also, but don't like the single point failure possibility. The HBase coupled us too tightly to the Hadoop world while we prefer more technical flexibility. Also HBase is designed for "cold"/old historical data lake use cases and is not typically used for web and mobile applications due to its performance concern. Cassandra, by contrast, offers the availability and performance necessary for developing highly available applications. Furthermore, the Hadoop technology stack is typically deployed in a single location, while in the big international enterprise context, we demand the feasibility for deployment across countries and continents, hence finally we are favor of Cassandra
If you are expert in SQL and PLSQL and use Oracle Database, then the best choice is Oracle Application Express. The functionality is already complete and very easy to use, so it's useless to find another tool if you are using Oracle. You don't use Oracle APEX only if: (1) you are using other database than Oracle, and (2) your application load is unpredictable.
I have no experience with this but from the blogs and news what I believe is that in businesses where there is high demand for scalability, Cassandra is a good choice to go for.
Since it works on CQL, it is quite familiar with SQL in understanding therefore it does not prevent a new employee to start in learning and having the Cassandra experience at an industrial level.
In the mid-size organization, we had a BI tool that had a significant license cost involved. With Oracle back-end we were able to switch to APEX and move all reporting at literally zero cost.
For Oracle PL/SQL users the learning curve is very quick and easy, there are ready templates that you can start with and eventually create complex reports.
You can track authorization and authentication on data editing and usage. High performance as it is native oracle sql codes.
Centralized data capturing, makes your datawarehouse writable for lookup tables or reference tables.
