1z0-184-25 Exam Dumps : Oracle AI Vector Search Professional

Oracle Database 23ai introduces the VECTOR data type (C) specifically for storing vector embeddings used in similarity search, supporting dimensions and formats (e.g., FLOAT32, INT8). VECTOR2 (A) doesn’t exist. BLOB (B) can store binary data, including vectors, but lacks the semantic structure and indexing support of VECTOR. VARCHAR2 (D) is for text, not numerical arrays. VECTOR is optimized for AI vector search with native indexing (e.g., HNSW, IVF), as per Oracle’s documentation.

Finding the closest matching sentences across books involves comparing a query vector to sentence vectors stored in a table (e.g., columns: book_id, sentence, vector). A nested query with ORDER BY (A) is the optimal SQL structure: an inner query computes distances (e.g., SELECT sentence, VECTOR_DISTANCE(vector, :query_vector, COSINE) AS score FROM sentences), and the outer query sorts and limits results (e.g., SELECT * FROM (inner_query) ORDER BY score FETCH FIRST 5 ROWS ONLY). This ranks sentences by similarity, leveraging Oracle’s vector capabilities efficiently, especially with an index.

Option B (exact search) describes a technique, not a structure, and a full scan is slow without indexing—lacking specificity here. Option C (GROUP BY) aggregates (e.g., by book), not ranks individual sentences, missing the “closest” goal. Option D (FETCH PARTITIONS BY) isn’t a valid clause; it might confuse with IVF partitioning, but that’s index-related, not query syntax. The nested structure allows flexibility (e.g., adding WHERE clauses) and aligns with Oracle’s vector search examples, ensuring both correctness and scalability—crucial when books yield thousands of sentences.