Behind every ERP screen sits a database that stores everything. Most serious ERP systems rely on relational storage such as MariaDB or MySQL, two open-source systems close to each other. The reason is not random: accounting and inventory need consistency that cannot tolerate a lost entry or a conflicting balance.

In relational storage, data lives in tables linked by keys, with constraints and indexes that prevent duplication or invalid references. Most important is support for transactions: a set of operations that all succeed together or none do. When posting an invoice, the journal entry and the balance update must happen together, or the numbers become unreliable.

This is the basis of double-entry: every movement has a debit and a credit that balance. A relational database enforces this balance at the server level, not through ad-hoc interface code. Indexes keep searching millions of records fast, and regular backups protect the company from disasters.

The Frappe framework we rely on uses MariaDB by default, placing this guarantee at the core. When evaluating any system, it is fair to ask about its database type and backup plan; a coherent answer signals technical maturity.

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