> For the complete documentation index, see [llms.txt](https://b-greve.gitbook.io/beginners-guide-to-clean-data/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems.md).

# Database-related problems

- [Numeric overflow](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/untitled.md)
- [Duplicate rows](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/duplicate-rows.md)
- [Table joins](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/table-joins.md)
- [Huge enterprise databases](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/huge-enterprise-databases.md)
- [Case sensitivity](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/case-sensitivity.md)
- [Separating DDL and DML statements](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/separating-ddl-and-dml-statements.md)
- [Database performance considerations](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/database-performance-considerations.md)
- [Naming tables and columns](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/naming-tables-and-columns.md)
- [Poorly written SQL](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/poorly-written-sql.md)
- [Large monolithic SQL scripts](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/large-monolithic-sql-scripts.md)
- [SQL orchestration](https://b-greve.gitbook.io/beginners-guide-to-clean-data/database-related-problems/sql-orchestration.md)