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Editorial Team
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Asked: 2026-05-23T05:32:13+00:00

I have a question regarding my Android app. Assume 2 tables A and B.

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I have a question regarding my Android app.

Assume 2 tables A and B. A contains some fields and a link to B with an ID. B contains an ID as primary key and a description.

When I display the contents of whole A, I don’t want to see the ID of B, but the description.

Table B can contain until 100 descriptions.

What is the best way to do this? Shall I query B for every record of A for getting the description? Or should I read table B into memory and get the description from memory?

I want a good performance, but don’t want to use all the available memory on the device.

Later on, A can contain such links to a table C, D, …

Any help is much appreciated.

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1 Answer

  1. Editorial Team

    You need to Use join queries.

    Join samples

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