You won't have to learn C or any entirely new programming language to work with a relational database. Specifically, SQLite refers to a lightweight C library for relational database management with Structured Query Language, known as SQL and sometimes pronounced as "sequel" for short. SQLite is a commonly used relational database. For the example above, that means you name the tables teacher, student, and course, not the plural forms of teachers, students, and courses. Note: Like with Kotlin classes, the convention is to use the singular form for the name of database tables. The presence of a foreign key means there's a relationship between the tables. When a table references the primary key of another table, it is known as a foreign key. This identifier is known as the primary key. For example, a graduate student might have a single professor as a doctoral advisor whereas that professor is the doctoral advisor for multiple students.Įvery table in a relational database contains a unique identifier for rows, such as a column where the value in each row is an automatically incremented integer. A database is called a relational database when it can model relationships between tables. Just as a spreadsheet can contain multiple sheets and an app can contain multiple classes, a database can contain multiple tables. Objects contain values for each property defined in the class, just as rows contain values for each column defined in the data table.
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