Yesterday, I had an encounter with a programmer who passionately claimed that MySQL is suitable for amateurs and small-scale applications, while Oracle is the go-to option for professionals. I am interested in hearing your perspectives on this matter.
Specifically, what are the precise advantages of Oracle over MySQL and PostgreSQL? Is it accurate to say that Oracle is exclusively for professionals, or is this viewpoint too subjective?

Oracle, MySQL, and PostgreSQL are all popular relational database management systems (RDBMS), each with its own strengths and areas of application. It is not accurate to say that Oracle is exclusively for professionals, as all three databases are used in a variety of scenarios, ranging from small-scale applications to enterprise-level systems.

Here are some advantages of Oracle over MySQL and PostgreSQL:

1. Scalability and Performance: Oracle is known for its ability to handle large-scale and mission-critical databases. It offers features like advanced indexing, partitioning, and query optimization techniques that enable it to handle complex workloads efficiently.

2. High Availability and Reliability: Oracle provides robust features for database replication, backup, and recovery, making it well-suited for high availability and disaster recovery scenarios.

3. Advanced Security: Oracle offers a comprehensive set of security features including fine-grained access control, encryption, and auditing capabilities, which are crucial for handling sensitive data in enterprise environments.

4. Enterprise Features: Oracle provides a wide range of enterprise-level features such as advanced analytics, data warehousing, and business intelligence tools. These features make it suitable for complex data processing and analysis.

However, both MySQL and PostgreSQL have their own strengths as well. MySQL is known for its simplicity, ease of use, and wide adoption in web applications. PostgreSQL, on the other hand, is highly extensible, open-source, and offers advanced features like geospatial support and JSON dоcument store.

Ultimately, the choice between Oracle, MySQL, or PostgreSQL depends on the specific requirements of your project, the scale and complexity of the application, budget constraints, and personal preference. It is always recommended to evaluate these databases based on your needs rather than relying solely on subjective viewpoints.

consider when comparing Oracle, MySQL, and PostgreSQL:

1. Cost: Oracle is generally considered more expensive than MySQL and PostgreSQL. Oracle has licensing fees and additional costs for certain features, while both MySQL and PostgreSQL are open-source and have no direct licensing costs. However, Oracle does offer extensive enterprise-level features and support that may justify the cost in certain scenarios.

2. Community and Ecosystem: MySQL and PostgreSQL have large and active communities, which means there is a wealth of resources, dоcumentation, and community support available. Oracle also has a strong community and ecosystem but may not be as widely adopted in some areas.

3. Compatibility and Standards: Oracle is known for its strict adherence to SQL standards, which can make it easier to port applications across different databases. MySQL and PostgreSQL, while also adhering to SQL standards, may have some differences in syntax and specific feature implementations.

4. Replication and Sharding: Oracle offers advanced replication features, including multi-master replication, which can be beneficial for complex distributed systems. MySQL also provides replication capabilities, while PostgreSQL supports logical and physical replication. Sharding, which involves distributing data across multiple servers, is well-supported in MySQL and PostgreSQL, but Oracle's sharding capabilities are part of its enterprise edition.

There are two points to be made here:
1: Just like Windows, Oracle is the first, the most famous, and commonly considered the best...
2: In reality, Oracle has a few chips (from what I know) that are highly relevant in managing large and very large databases. An example of this is Oracle RAC, which allows for fast deployment of cluster database access. Additionally, it optimizes the usage of multiple processors and a large amount of memory.

However, given the abundance of diverse database technologies available on the market today, each specializing in solving different tasks, I find myself questioning the advantages of using Oracle DB. This is especially true when considering the costs associated with purchasing and supporting it. The company's pricing policy is particularly unpleasant.

Both Mysql, Oracle, MSSQL, and Postgres are professional databases that are widely used in various industries. Their professionalism stems from the suitability of their application rather than the complexity of the tools themselves.

When it comes to creating a business card website, professionals would assert that using an Oracle database is unnecessary. Simpler alternatives can efficiently handle such tasks.

On the other hand, if the objective is to develop inventory accounting software in the Microsoft environment using C#, professionals may lean toward utilizing MS SQL.

It is crucial for professionals to select the appropriate tools for specific tasks. Comparing databases, like comparing a truck to a Ford car, requires an in-depth analysis of technical characteristics and project requirements.

The idea that Oracle is suitable for professionals while MySQL and PostgreSQL are for amateurs is a tired trope that ignores the reality of the industry. In today's fast-paced, agile development environment, flexibility, scalability, and cost-effectiveness are more important than ever.

Oracle's inflexibility, complexity, and high cost make it a poor choice for many developers, including professionals. Meanwhile, MySQL and PostgreSQL offer a level of customization and control that Oracle can't match.