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Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which two are advantages of using Document Store in MySQL?

A) MySQL can store XML as a schema-less database
B) MySQL provides a NoSQL API to access the document store
C) MySQL provides a native data type to store JSON data as a document
D) MySQL is a document database allowing PDF and Word documents
E) MySQL provides a native data type to index PDF documents

2. How does MySQL HeatWave improve query performance?
Response:

A) By offloading analytics queries to an in-memory, highly parallel processing engine.
B) By automatically creating indexes on frequently used columns.
C) By caching the entire database in memory.
D) By replicating data across multiple servers.

3. Which statement adds a column with the largest integer data type?

A) ALTER TABLE SCIENTIFIC ADD scientific_value DECIMAL(15,10);
B) ALTER TABLE SCIENTIFIC ADD scientific_value INTEGER;
C) ALTER TABLE SCIENTIFIC ADD scientific_value DECIMAL(10,10);
D) ALTER TABLE SCIENTIFIC ADD scientific_value BIGINT;

4. You establish MySQL Enterprise Server on Oracle Cloud Infrastructure connection via Secure Shell (SSH) For accessing a new MySQL Enterprise Edition on an Oracle Cloud Infrastructure (OCI) Instance you " Add SSH key " information during the OCI instance setup. You want to use Putty from your Windows Client to install MySQL.
What are the correct steps to accomplish this?

A) Use the provided private key for authentication.
B) Convert the private key to ppk format first and use the new private key for authentication.
C) Open Port 22 on your OCI Instance and convert the private key to ppk format. This new private key can be used for authentication.
D) Open Port 22 on your OCI Instance and configure Putty with the ssh private key.

5. Which query will find rows in a table that have no counterpart in another table?

A) SELECT left_tbl.*FROM left_tbl LEFT JOIN right_tbl ON left_tbl.id=right_tbl.idWHERE right_tbl.id IS NULL;
B) SELECT t1.name, t2.name2FROM employee AS t1 INNER JOIN info AS t2 ON t1.name= t2.name2;
C) SELECT *FROM table1 INNER JOIN table2 ON table1.id=table2.id WHERE table1.id=! table2.id;
D) SELECT t1.name, t2.name2FROM employee t1 INNER JOIN info t2 WHERE t1.name=t2.name;

Solutions: