What is typically a characteristic of a well-designed database schema?

A well-designed database schema is distinguished by clear relationships among its tables. This characteristic is essential because it fosters an organized structure that facilitates efficient data retrieval and manipulation. When relationships are articulated well, it allows for better data integrity and consistency, as well as easier maintenance and updates.

Clear relationships mean that the connections between tables—such as primary and foreign keys—are defined accurately. This ensures that data can be related and accessed in a coherent manner, crucial for query performance and reducing the chances of data anomalies. Clear relationships also enhance the schema's scalability and adaptability to future requirements.

The other options point to conditions that are undesirable in a well-designed database. Redundant data can lead to inconsistencies and inefficient use of storage. Low data integrity indicates a lack of accuracy and consistency in the database, which is detrimental to any data management system. Minimal normalization often results in inefficient data storage and potential anomalies during updates or deletions. Therefore, having clear relationships among tables lies at the core of an effective and reliable database schema.