Difference between a foreign key and a primary key:

Foreign key Primary key
A primary key attribute in one table is the foreign key for another table. In a logical way, a foreign key is used to establish a link between two tables. In relational databases, a primary key is a key that is used for identifying and defining the characteristics uniquely of each row.
A foreign key is used for identifying a row of another table uniquely. A primary key may have a single attribute or multiple attributes.
A foreign key may be a field or group of fields in a table. As a foreign key may be a column or group of columns. The primary key will contain a unique value for each row of data.
Foreign key must not be null when the minimum cardinality of a data in a column of a table is implied as one...

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Ch. 1 - Prob. 1RQ Ch. 1 - Prob. 2RQ Ch. 1 - Prob. 3RQ Ch. 1 - Prob. 4RQ Ch. 1 - Discuss the problems that can be caused by data...Ch. 1 - Explain the role of a primary key.Ch. 1 - Prob. 7RQ Ch. 1 - Prob. 8RQ Ch. 1 - What type of relationship can’t be stored in a...Ch. 1 - Identify at least three reasons an organization...

Ch. 1 - Prob. 1MC Ch. 1 - Prob. 2MC Ch. 1 - Prob. 3MC Ch. 1 - Prob. 4MC Ch. 1 - Prob. 5MC Ch. 1 - Prob. 6MC Ch. 1 - Prob. 7MC Ch. 1 - Which of the following has no partial or...Ch. 1 - Prob. 9MC Ch. 1 - Which of the following has no partial dependencies...Ch. 1 - Which of the following has no repeating groups but...Ch. 1 - Prob. 12MC Ch. 1 - Prob. 13MC Ch. 1 - A unique identifier for a data row that consists...Ch. 1 - Which of the following symbols represents an...Ch. 1 - Prob. 16MC Ch. 1 - Which of the following represents a field in a...Ch. 1 - Which of the following defines a relationship in...Ch. 1 - When part of the data in a table depends on a...Ch. 1 - Which of the following is used to join data...Ch. 1 - Which tables and fields would you access to...Ch. 1 - Prob. 2HOA Ch. 1 - Prob. 3HOA Ch. 1 - Prob. 4HOA Ch. 1 - Access path A database table is composed of...Ch. 1 - Prob. 6HOA Ch. 1 - Prob. 7HOA Ch. 1 - Prob. 8HOA Ch. 1 - Prob. 9HOA Ch. 1 - Prob. 10HOA

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Foreign key	Primary key
A primary key attribute in one table is the foreign key for another table. In a logical way, a foreign key is used to establish a link between two tables.	In relational databases, a primary key is a key that is used for identifying and defining the characteristics uniquely of each row.
A foreign key is used for identifying a row of another table uniquely.	A primary key may have a single attribute or multiple attributes.
A foreign key may be a field or group of fields in a table. As a foreign key may be a column or group of columns.	The primary key will contain a unique value for each row of data.
Foreign key must not be null when the minimum cardinality of a data in a column of a table is implied as one...