Question 1

A machine learning team is using IVF indexes in Oracle Database 23ai to find similar images in a large dataset. During testing, they observe that the search results are often incomplete, missing relevant images. They suspect the issue lies in the number of partitions probed. How should they improve the search accuracy?

Options :

A : Add the TARGET_ACCURACY clause to the query with a higher value for the accuracy

B : Change the index type to HNSW for better accuracy

C : Increase the VECTOR_MEMORY_SIZE initialization parameter

D : Re-create the index with a higher EFCONSTRUCTION value

Answer: A

Question 2

How does an application use vector similarity search to retrieve relevant information from a database, and how is this information then integrated into the generation process?

Options :

A : Encodes the question and database chunks into vectors, finds the most similar using cosine similarity, and includes them in the LLM prompt

B : Trains a separate LLM on the database and uses it to answer, ignoring the general LLM

C : Converts the question to keywords, searches for matches, and inserts the text into the response

D : Clusters similar text chunks and randomly selects one from the most relevant cluster

Answer: A

Question 3

How can vector data be manipulated within an Oracle Database using Data Manipulation Language (DML)?

Options :

A : Insertion only

B : Insertion, updates, deletion, and loading

C : Insertion and updates

D : Insertion, updates, and deletion

Answer: B

Question 4

What is the primary purpose of the VECTOR NORM() function in Oracle Database 23ai?

Options :

A : To return the magnitude or length of a vector.

B : To convert a vector to a string representation.

C : To determine the number of dimensions in a vector.

D : To calculate the Euclidean distance between two vectors.

Answer: A

Question 5

Assuming we have a table called VT2 that contains vectors for mapping various shapes, colors, and sizes, what is the primary purpose of the following UPDATE statements? SQL> UPDATE vt2SET shape = 'TriangleWHERE id IN (2, 4, 7, 22, 31, 41, 44, 55);SQL> UPDATE vt2SET size = 'Medium'WHERE id IN (5, 22, 25, 32, 34, 42, 43, 53, 54, 55);

Options :

A : To add new rows of data to the VT2 table with different sizes and shapes.

B : To assign attributes like size and shape to existing vectors based on their IDs.

C : To delete rows from the VT2 table that do not meet specific criteria.

D : To modify the vector values stored in the VT2 table.

Answer: B