Connection and persistent data

How do you connect a Lovable application to a database and check that its reads and writes work correctly?

  • Lovable
  • Claude Code
  • Codex

1250 € per session, excl. VAT

In short

This half-day session of 3 hours enables you to connect an existing Lovable application to a test database. You configure access, adapt read and write operations, then check persistence, errors and permissions. You leave with a documented connection and evidence of verification.

Why this training?

An interface can display a request without having saved it: after reloading, the changes disappear. Distinguishing between local state, query and storage allows you to check that Lovable is actually using the expected database. A working connection is not enough if access rights are too broad or errors remain invisible. The course combines precise instructions to AI, human code review and permission tests to identify these flaws before any real-world use. Continuing case study: The fictional organisation ‘Avelune Atelier’ tracks its repair requests in a Lovable interface populated with simulated data. It wants to store a reference, a description and a status persistently. Participants connect this interface to an isolated database containing only fictional requests. Transfer to the workplace: On another authorised interface, reproduce the connection in a test environment, reuse the verification checklist and have the permissions reviewed by the technical lead before any real-world use.

Objectives of this training

  • Identify the data path between the interface, access layer and database.
  • Configure connection parameters without exposing a privileged secret.
  • Adapt the reading, creation and modification of a request.
  • Verify persistence and the rejection of an unauthorised operation.
  • Document test results and outstanding issues.

Who is it for and what are the prerequisites?

Roles and tasks concerned

  • Lovable users wishing to replace simulated data with persistent storage.
  • Digital project officers able to modify a simple interface and follow technical instructions.

Prior skills

  • Have already used Lovable and formulated instructions for code changes.
  • Distinguish between a table, a field and an identifier; be able to read a simple error message.

What you will work on

  1. Identify the data and how it is accessed

    Objective: Understand the connection to be made on the supplied application. Local state, persistence, identifiers and field mapping; distinction between public parameters and privileged secrets.

  2. Configure a verifiable connection

    Objective: Obtain an initial read from the test database. Official procedure adapted to the environment, access configuration and location of secrets; diagnosis of connection errors.

  3. Save and modify a request

    Objective: Replace local changes with controlled writes. Field validation, stable identifier, save confirmation and error handling. Claude Code or Codex can assist with code modification and review, depending on authorised access.

  4. Check persistence and permissions

    Objective: Measure the quality of the connection and assess its limitations. Normal-operation tests, invalid data, access denied and connection error; calculation of passed tests relative to tests executed.

What you take away

  • Practice application connected to the test database.
  • Connection sheet without secrets: parameters, location and permissions.
  • Completed test checklist with evidence and pass rate.
  • Log of changes and issues to address.

Method and assessment

  • Short explanations followed by immediate practice on the continuing case study.
  • Individual work followed by work in pairs, with peer review of outputs.
  • Guided group discussion: what works, what needs correcting and what remains a human decision.
  • Preparation: Have a working Lovable project, a test database and the necessary rights, with tools authorised by the organisation. Prepare the supplied schema and fictional data; check the official documentation for the connection procedure applicable to the environment.

Observable criteria: The requests displayed match the records in the database. ; A creation and a modification remain visible after reloading. ; A missing required field leads to an explicit rejection, without an unwanted write. ; A prohibited operation is rejected by the access control layer, independently of the interface. ; No privileged secret appears in client-side code, AI instructions or screenshots..

Frequently asked questions

Is the database created during the session?

The schema and environment are prepared in advance to focus the exercises on making the connection.

Do you need to use all three tools?

No. Lovable remains central; Claude Code and Codex are optional assistants, depending on authorisations.

Can internal data be used?

Only fictional or anonymised data, with no confidential information or secrets passed to AI.

Is the deliverable ready for production?

No. It works in a practice environment; a technical and security review is still necessary before any real-world use.

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