Glossary

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Glossary / Evaluation and implementation guide

Row-Level Security

Row-level security (RLS) restricts which rows of a table a user can query, based on their identity, role, or attributes, without creating separate copies of the data.

Policies are typically expressed as filter conditions the engine applies automatically, so a regional manager sees only their region even when querying a global table.

A practical example

Example: an RLS policy on the orders table filters rows where order_region matches the querying user's assigned region, so the same dashboard serves every region with no duplicated datasets.

What to evaluate before investing

  • Confirm RLS is enforced in the query engine itself, not only in the BI layer, which users may bypass
  • Test how policies interact with shared dashboards, embedded analytics, and service accounts
  • Ask how policy changes are audited and who is authorized to modify them

Limitations and tradeoffs

Complex policies can slow queries and are easy to misconfigure; a single missing filter condition can expose rows across tenants, so testing with real roles is essential.

Plan your next step with MeshLine

Connect this decision to your automation, organic marketing and customer lifecycle management. In a MeshLine demo, discuss your existing tools, the scope you need and how to measure the result.