Questions & Answers about El límite de datos es bajo.
The accent mark shows where the stress goes: LÍ-mi-te.
Without the accent, Spanish pronunciation rules would make it sound different. The written accent tells you that the stress is on the first syllable.
So:
- límite = noun, limit
- limite could appear as a verb form, from limitar (for example, que él limite = that he limit)
The accent helps distinguish the noun clearly.