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Semantic relationships take a higher and more non-specific view of the relationship.
What is a candidate key?
Complete the sentence below.
A key is an attribute of a table that matches a primary key attribute in another table to create a relationship.
A composite key is a combination of two fields that together can uniquely identify a record.
Complete the sentence below.
A relationship is where a single record of a table is related to a single record of another table.
Complete the sentence below.
integrity is a rule that states that every entity must have a primary key field and the values in that field must be unique to each record.
What type of relationship should we not use in our database structure?
Complete the sentence below.
A key is any attribute, or group of attributes, that can uniquely identify a tuple in a relation.
Referential Integrity is a rule states that every foreign key value must match the primary key value of a record in another table, or must be null.
What type of relationship is shown below?