guid vs uuid: What are the differences?

# Introduction
In database management, two commonly used identifiers are GUID (Globally Unique Identifier) and UUID (Universally Unique Identifier). While both serve the purpose of uniquely identifying records, they have distinct differences worth noting.

1. **Generation Method**: GUIDs are typically generated using algorithms that involve a combination of certain unique identifiers like the network address and timestamp. On the other hand, UUIDs are generated using a standardized method that ensures uniqueness across systems without relying on specific hardware details.
2. **Format**: GUIDs are commonly presented in curly braces and consist of hexadecimal characters. In contrast, UUIDs do not include curly braces and are represented as a 32-character hexadecimal string.
3. **Versioning**: GUIDs do not have different versions; they are created using the same algorithm. UUIDs, however, have different versions like time-based UUIDs, random UUIDs, and name-based UUIDs, each with specific features and use cases.
4. **Collisions**: Due to their different generation methods, GUIDs are susceptible to collisions when generated in certain scenarios. UUIDs, designed to minimize collisions, have a significantly lower probability of generating duplicate identifiers.
5. **Implementation**: GUIDs are more commonly associated with Microsoft technologies, where they are widely used for unique identification purposes. UUIDs, designed to be platform-independent, are favored in non-Microsoft environments and in applications that require interoperability.
6. **Uniqueness**: GUIDs are unique within a local system or network but may not be globally unique. UUIDs, as the name suggests, are intended to be unique across all systems and networks without the need for centralized coordination.

In Summary, the key differences between GUID and UUID lie in their generation methods, formatting, versioning, collision probability, implementation preferences, and the scope of uniqueness they offer. Each identifier type has its own strengths and considerations when it comes to ensuring reliable and globally unique identification.