1Z0-1093-25 EXAM ASSESSMENT | RELIABLE 1Z0-1093-25 EXAM PREP

1z0-1093-25 Exam Assessment | Reliable 1z0-1093-25 Exam Prep

1z0-1093-25 Exam Assessment | Reliable 1z0-1093-25 Exam Prep

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Oracle Cloud Database Services 2025 Professional Sample Questions (Q83-Q88):

NEW QUESTION # 83
Which statement accurately describes the function of the HeatWave service in relation to a standard MySQL database?

  • A. HeatWave provides an in-memory, massively parallel query accelerator to MySQL, improving analytical query performance.
  • B. HeatWave is a clustering solution, where a single MySQL instance is split into multiple parts.
  • C. HeatWave is a specialized version of MySQL designed solely for transactional workloads, optimized for high concurrency.
  • D. HeatWave is a standalone database system that replaces MySQL, offering enhanced security features.
  • E. HeatWave acts as a caching layer in front of MySQL, speeding up access to frequently accessed data.

Answer: A

Explanation:
HeatWave as a Query Accelerator:
HeatWave enhances theMySQL Database Serviceby providing anin-memory, massively parallel query accelerator. It is specifically designed to speed upanalytical (OLAP) queries, making them run significantly faster compared to using MySQL alone.
* The system stores data in acolumnar formatand processes it in memory, utilizingdistributed, parallel processingto achieve high performance.
* Unlike traditional MySQL setups, HeatWave canexecute complex analytical workloadsefficiently.
Why the other options are incorrect:
* A:HeatWave is not a standalone database but an extension of MySQL.
* C:It is optimized foranalytical workloads, not transactional.
* D:It is more than just a caching layer; it actively processes queries.
* E:HeatWave clusters do not split MySQL instances but enhance query processing.


NEW QUESTION # 84
How does HeatWave address the challenges of Online Analytical Processing (OLAP) compared to traditional row-based database systems?

  • A. HeatWave leverages a distributed caching mechanism to store frequently accessed data.
  • B. HeatWave leverages AI-powered indexing to optimize the data retrieval.
  • C. HeatWave automatically shards the database to distribute the workload across multiple nodes.
  • D. HeatWave employs a columnar data format in memory, enabling faster scans and aggregations for complex queries.
  • E. HeatWave uses a specialized indexing technique to speed up data retrieval.

Answer: D

Explanation:
HeatWave's Columnar Processing:
HeatWave improves OLAP performance by storing data in acolumnar formatin memory. This format is particularly efficient foranalytical queriesbecause:
* It minimizes the amount of data read by only scanning thenecessary columns.
* Columnar storage supportsvectorized processing, which significantly speeds up aggregation operations.
* Beingin-memory, it eliminates disk I/O bottlenecks, crucial for high-speed analytics.
Why the other options are incorrect:
* A:Indexing is useful, but columnar storage is the primary driver of speed.
* C:Caching improves access times but does not address the fundamental OLAP challenge of processing large datasets.
* D:HeatWave distributes workload usingparallel processing, not simple sharding.
* E:AI-powered indexing is not a core feature of HeatWave.


NEW QUESTION # 85
When cloning a BaseDB database for development and testing, which of the following considerations is MOST critical to ensure compliance with data privacy regulations?

  • A. Using the same database version as the production database.
  • B. Ensuring the compute shape of the cloned database is identical to the production database.
  • C. Maintaining the same network security group (NSG) rules as the production database.
  • D. Scheduling the cloning operation during off-peak hours.
  • E. Masking or anonymizing sensitive data in the cloned database.

Answer: E

Explanation:
B: Masking or anonymizing sensitive data:
* Data privacy regulations (likeGDPR,HIPAA) mandate thatpersonally identifiable information (PII) is protected, even in non-production environments.
* Cloning a database without masking sensitive data could expose confidential information to unauthorized users.
* Techniques include:
* Data masking:Replacing real data with realistic, but non-sensitive values.
* Data anonymization:Irreversibly removing personally identifiable information.
Why the other options are incorrect:
* A. Matching compute shape:Relevant to performance, not privacy.
* C. Using the same database version:Important for compatibility, but not related to data privacy.
* D. Same NSG rules:Important for network security, but does not directly address data exposure.
* E. Off-peak scheduling:Minimizes disruption but does not address data protection.


NEW QUESTION # 86
The concept of 'schema-less' in the context of NoSQL databases primarily refers to what?

  • A. Data is stored in a highly structured format, mirroring the tabular structure of relational databases with predefined columns and data types.
  • B. Data is stored in a binary format, eliminating the need for any schema or data interpretation.
  • C. All data stored within the database must conform to a single, universally defined schema for consistency.
  • D. The database automatically infers the schema from the data being inserted, without requiring any explicit schema definition beforehand.

Answer: D

Explanation:
Schema-less in NoSQL:
This means you don't need to define a rigid, fixed structure before data insertion. Each record can have its own structure, allowing flexibility for evolving data models. This is useful for unstructured or semi-structured data.
Why the other options are incorrect:
* B:This describes relational databases.
* C:This describes the structured nature of SQL databases.
* D:While binary formats may be used, schema-less refers to the logical, not physical, structure.


NEW QUESTION # 87
Which two prerequisites are required before you can provision a MySQL HeatWave DB system?

  • A. An OCI Compute instance to act as a client for the MySQL DB system.
  • B. A Virtual Cloud Network (VCN) with appropriately configured subnets.
  • C. A pre-configured MySQL database dump for initial data loading.
  • D. A configured OCI Vault with encryption keys for database security.
  • E. A MySQL Enterprise Edition license.

Answer: B,E

Explanation:
VCN Requirement (B):
AVirtual Cloud Network (VCN)with appropriate subnets is essential to providenetwork connectivity and isolationfor the HeatWave DB system. It ensures secure data flow within the Oracle Cloud Infrastructure.
License Requirement (E):
Since HeatWave is anenterprise feature, it requires aMySQL Enterprise Edition license.Without this license, the HeatWave functionalities cannot be utilized.
Why the other options are incorrect:
* A:Data loading can be performed post-provisioning.
* C:While encryption can be configured, it is not a prerequisite.
* D:An OCI Compute instance may be used as a client but is not mandatory for provisioning.


NEW QUESTION # 88
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