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Asked: 2026-06-12T14:32:00+00:00

Why is a data layer used while we can write most of the code

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Why is a data layer used while we can write most of the code in stored procedures itself? What are the advantages and disadvantages in it?
Data layer is an important layer in 3 tier architecture, which handles all the database related tasks. My question is that, whether we can achieve this using a stored procedure itself in most of the cases? In that case, what is the major advantage in using that layer?

EDIT:

The question was just to get clear idea about the usage of data layer and database stored procedures. I have got an answer below which helped me in that.

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1 Answer

  1. Editorial Team

    The 3-tier approach is for when you wish to maybe use different Database Engine types.

    From Multitier architecture

    Data tier

    This tier consists of database servers. Here information is stored and
    retrieved. This tier keeps data neutral and independent from
    application servers or business logic. Giving data on its own tier
    also improves scalability and performance.

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