Should a database table always have primary keys?

by

A table should have a primary key so that you could identify each row uniquely with it.

Technically, you can have tables without a primary key, but you’ll be breaking good database design rules.

More Related Contents:

  1. What’s the Hi/Lo algorithm?
  2. Can I have multiple primary keys in a single table?
  3. Surrogate vs. natural/business keys [closed]
  4. What are the performance improvement of Sequential Guid over standard Guid? [closed]
  5. How to retrieve the last autoincremented ID from a SQLite table?
  6. Can we update primary key values of a table?
  7. What are the design criteria for primary keys?
  8. Oracle (ORA-02270) : no matching unique or primary key for this column-list error
  9. Is it fine to have foreign key as primary key?
  10. Deciding between an artificial primary key and a natural key for a Products table
  11. GUID vs INT IDENTITY [duplicate]
  12. Should each and every table have a primary key?
  13. When and why are database joins expensive?
  14. Normalization: What does “repeating groups” mean?
  15. Copying data from one SQLite database to another
  16. Difference Between Firestore Set with {merge: true} and Update
  17. What is a database transaction?
  18. What’s the difference between findAndModify and update in MongoDB?
  19. How SID is different from Service name in Oracle tnsnames.ora
  20. Difference between a theta join, equijoin and natural join
  21. How to parse the data from Google Alerts?
  22. Storing an image into an Attachment field in an Access database
  23. Best representation of an ordered list in a database?
  24. Business Logic: Database or Application Layer
  25. NULL permitted in Primary Key – why and in which DBMS?
  26. SQL LIKE operator in Cloud Firestore?
  27. What are some best practices and “rules of thumb” for creating database indexes?
  28. Personal names in a global application: What to store [closed]
  29. CAP theorem – Availability and Partition Tolerance
  30. Database – Data Versioning [closed]

Leave a Comment