On a project we are unsure whether or not to purchase the query service. In what scenarios can the query service be used? is it possible to have some practical examples that help to understand when it is actually necessary to have this service? I imagined the following two cases:1. Do complex search...

ok, last question on the topic. In addition to using the query service I can also use the API, correct? in case you don't want to buy the query service on the project. Thanks in advance

So if I set up 2 individual schemas and 2 event schemas, I will have to set up two different datastreams, it's correct? because the datastream is tied to the dataset. and consequently I will have to create a new properties tag, correct? because the web sdk configuration under the property tag binds ...

When I preview the dataset in AEP, only the last ingestion of the data set is always displayed. Even if I select a previous data set and click on the button, the latest data set is always displayed. Is it possible, from the UI and not via the API, to view data sets prior to the last ingestion date?

When are batch APIs generally used versus streaming APIs?

is it necessary to create an ecid attribute on individual schema and / or event schema?

I have 2 external systems that do data ingestion on AEP, the two systems are:1. System1 (id=system1_id)2. System2 (id=system2_id) Can I create two individual schemas SYSTEM1 and SYSTEM2? Or can I create a single Individual Schema that contains both the system1_id and system2_id keys as identity attr...