What is the main drawback of relying solely on MuleSoft's object store for data solutions?

Relying solely on MuleSoft's object store for data solutions has a significant drawback in that it is not suitable for complex queries. The object store is primarily designed for lightweight data storage and retrieval, handling key-value pairs rather than structured data. While it excels in basic data operations and transient data management, it lacks the advanced querying capabilities found in relational databases or more specialized data stores.

In scenarios where complex relationships between data entities need to be modeled, or where operations like JOINs, GROUP BYs, and advanced filtering are required, the object store does not provide the necessary infrastructure. This limitation can lead to challenges for applications that require sophisticated data manipulation or reporting features.

It's also worth noting that while the object store supports transactions, offers some level of data persistence, and provides a straightforward storage mechanism, these attributes do not compensate for the absence of robust querying capabilities. Therefore, for developers and architects needing to perform complex data operations, relying solely on the object store would not be advisable.