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Which two actions must you undertake when configuring the networking to provide network connectivity for a MySQL HeatWave DB System instance?
A . Service Gateway for Oracle Services:
Ensures the HeatWave DB System can access Oracle Services like Object Storage without using the public internet.
Essential for tasks such as patching and backups.
C . Ingress security rules:
Allows necessary traffic to reach the HeatWave DB System.
Typically, rules will permit MySQL port (3306) and any application-specific ports.
Configured using VCN security lists or NSGs.
Why the other options are incorrect:
B . Public subnet deployment: Exposes the database to the internet, which is a security risk.
D . Dynamic routing gateway: Not mandatory unless inter-VCN connectivity is specifically required.
E . Blocking egress entirely: Restricting all outbound traffic can prevent necessary updates and communication with Oracle services.
Oracle MySQL HeatWave Documentation: Network Configuration Guidelines
Which two prerequisites are required before you can provision a MySQL HeatWave DB system?
VCN Requirement (B):
A Virtual Cloud Network (VCN) with appropriate subnets is essential to provide network connectivity and isolation for the HeatWave DB system. It ensures secure data flow within the Oracle Cloud Infrastructure.
License Requirement (E):
Since HeatWave is an enterprise feature, it requires a MySQL 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.
Oracle MySQL HeatWave Provisioning Guide
When using the OCI Console, which two options are configurable during the initial provisioning of a MySQL HeatWave DB system?
A . Number of HeatWave nodes:
During provisioning, users specify the number of nodes to allocate for the HeatWave analytical workload.
More nodes enable higher performance for large datasets.
B . MySQL version:
The selected version affects compatibility and available features.
Users can choose from supported versions like MySQL 8.0.
Why the other options are incorrect:
C . Character set: Typically configured after database creation.
D . Storage size: While storage can be specified, it is not part of HeatWave-specific configuration.
E . Initial database user: Managed post-provisioning, not as part of the initial setup.
Oracle MySQL HeatWave Documentation: DB System Provisioning
In comparing NoSQL databases with relational databases, what constitutes a fundamental difference in their approach to data relationships?
B . Relational vs. NoSQL data relationships:
Relational Databases: Use foreign keys to establish relationships between tables, maintaining referential integrity.
NoSQL Databases: Typically do not enforce relationships through foreign keys. Instead, they:
Embed related data within a single document (common in document stores like MongoDB).
Use application-level joins to link related data (common in key-value or column-family stores).
Graph databases (a type of NoSQL) use edges to explicitly represent relationships between nodes.
This difference highlights the flexibility vs. consistency trade-off between NoSQL and relational databases.
Why the other options are incorrect:
A . NoSQL databases lack relationships: Incorrect; they handle relationships differently.
C . NoSQL using foreign keys exclusively: NoSQL databases generally do not enforce such relationships.
D . Relational databases lack relationship mechanisms: Incorrect as relational databases are designed around relationships.
Oracle NoSQL Database Documentation: Data Modeling and Relationships
The concept of 'schema-less' in the context of NoSQL databases primarily refers to what?
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.
Oracle NoSQL Database Service Overview
