CSV

CSV (Comma-Separated Values) is a plain text file format used to represent tabular data, where each line is a record and fields within a record are separated by a delimiter, most commonly a comma. CSV files are widely used to move structured data between applications that do not share a direct integration.

Characteristics in manufacturing and regulated environments

In industrial operations and manufacturing systems, CSV commonly refers to files used to:

• Import or export master data (materials, equipment lists, recipes, part numbers) between ERP, MES, LIMS, and other systems
• Transfer production records, test results, and quality metrics from shop-floor or OT systems into reporting or analytics tools
• Stage data for one-time migrations or cutovers between legacy and new systems
• Share data with suppliers, contract manufacturers, or partners where system-to-system integration is limited

Although the name suggests commas, other delimiters such as semicolons or tabs are sometimes used. CSV itself does not define data types, validation rules, or metadata. These must be agreed separately or enforced by the importing system.

What CSV includes and excludes

CSV files include:

• A text-based representation of rows and columns
• Header rows that may define column names
• Simple escaping rules for delimiters and line breaks within fields, such as quoting

CSV files do not include:

• Built-in schemas, field types, or constraints
• Formatting, formulas, or macros found in spreadsheet files
• Versioning, audit trails, or access controls

Operational considerations

When CSV is used for production, quality, or compliance-relevant data, organizations typically pay attention to:

• Consistent column ordering, naming, and delimiters across files and systems
• Character encoding (for example UTF-8) to avoid data corruption
• Time zone and format conventions for timestamps and numerical values
• Procedures for generation, review, transfer, and storage in line with internal quality or data integrity requirements

Common confusion

CSV is often confused with:

• Spreadsheet files (such as XLSX): These can contain multiple sheets, formatting, and formulas. CSV is plain text and contains only raw values laid out in a single logical table.
• Database exports or backups: Databases may be exported as CSV, but a CSV file is not a database. It has no indexes, constraints, or query engine.

Despite its simplicity, CSV remains a common interchange format in manufacturing and quality workflows, particularly where lightweight, system-neutral data exchange is needed.