Understanding Oracle VECTOR Data Types and AI Vector Search A Complete Oracle AI Database Guide for DBAs and Developers Article Overview: This guide explains Oracle's native VECTOR data type, vector embeddings, dense and sparse vectors, vector formats, similarity search, vector indexes, approximate nearest-neighbor search, RAG architecture, performance considerations, and practical Oracle DBA recommendations. Introduction Artificial Intelligence is changing the way applications search, classify, recommend, and retrieve information. Traditional database queries normally search structured information using exact values, ranges, keywords, or relational conditions. AI applications often need to answer a different type of question: Example: "Find documents that have a meaning similar to this question, even if they do not contain exactly the same words." This is where vector embeddings and semantic search become important. Oracle Database prov...