Tietokantamerkintä

Tietokantamerkintä refers to a single record or entry within a database. It represents a collection of related data fields that describe a specific item, entity, or event. For example, in a customer database, a single tietokantamerkintä might contain information such as a customer's name, address, phone number, and email address. Each piece of information within the record is stored in a specific field, and the entire collection of fields forms the complete tietokantamerkintä.

Databases are structured to store and manage large amounts of information efficiently. Tietokantamerkinnät are the fundamental building blocks of this organization. They are typically arranged in tables, where each row represents a tietokantamerkintä and each column represents a specific data field. This tabular structure allows for easy sorting, filtering, and retrieval of specific information.

The concept of a tietokantamerkintä is crucial for understanding how data is organized and accessed in any database system, from simple spreadsheets to complex relational databases. It allows users to interact with data on an individual item level, making it possible to add, modify, or delete specific records as needed. The uniqueness of each tietokantamerkintä is often ensured by a primary key, which is a field or a set of fields that uniquely identifies each record within a table.