What criteria do you consider when designing database table structures?
sobes.tech AI
Answer from AI
When designing the structure of tables in a database, the following criteria are considered:
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Data normalization — dividing data into logical tables to eliminate redundancy and update anomalies.
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Data types and constraints — choosing the correct column types and constraints (PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL) to ensure data integrity.
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Relationships between tables — defining relationships (one-to-one, one-to-many, many-to-many) and implementing them through foreign keys.
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Performance — indexing frequently used columns to speed up queries.
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Scalability and extendability — the structure should allow easy addition of new fields and tables without major changes.
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Security and access rights — restricting access to data at the table or column level.
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Features of the subject area — considering business requirements and data specifics.
Example: if you have a "Users" table and an "Orders" table, a one-to-many relationship is implemented through a foreign key in the "Orders" table referencing the primary key of the "Users" table.