Podcast
Questions and Answers
What is a primary key in a database?
What is a primary key in a database?
- A field that can have multiple matches in another table
- A field in a table that uniquely identifies each row in that table (correct)
- A field that holds limited data in a single table
- A field that is not unique and can have duplicates
What is a foreign key in a database?
What is a foreign key in a database?
- A field that is not necessary in a table
- A field that is unique from others
- A field that does not create any relationship between tables
- A field in one table that uniquely identifies a row in another table (correct)
What is the difference between a flat file database and a relational database?
What is the difference between a flat file database and a relational database?
- Flat file database allows data to be held in multiple tables, while relational database only allows data in a single table
- Relational database allows data to be held in multiple tables, while flat file database only allows data in a single table (correct)
- Flat file database has no limitations on how data can be viewed, while relational database has limited viewing capabilities
- Relational database has no limitations on how data can be viewed, while flat file database has limited viewing capabilities
What is the purpose of creating a relationship between tables in a database?
What is the purpose of creating a relationship between tables in a database?
What type of relationship is defined by 'one-to-many'?
What type of relationship is defined by 'one-to-many'?
What is the purpose of a primary key in a database?
What is the purpose of a primary key in a database?
In a relational database, what is the function of a foreign key?
In a relational database, what is the function of a foreign key?
What distinguishes a flat file database from a relational database?
What distinguishes a flat file database from a relational database?
What type of relationship is defined by 'one-to-many'?
What type of relationship is defined by 'one-to-many'?
What is the key function of a primary key in a database table?
What is the key function of a primary key in a database table?
What is the key field in a database?
What is the key field in a database?
What is the primary function of a primary key in a database table?
What is the primary function of a primary key in a database table?
Which type of database allows data to be held in a number of tables where links are created to connect the data in different tables?
Which type of database allows data to be held in a number of tables where links are created to connect the data in different tables?
What is the primary characteristic of a foreign key in a database?
What is the primary characteristic of a foreign key in a database?
What type of relationship is defined by 'one-to-one'?
What type of relationship is defined by 'one-to-one'?
Flat file databases are more flexible and efficient than relational databases.
Flat file databases are more flexible and efficient than relational databases.
In a one-to-many relationship, one primary key in a record can only ever match one other foreign key in another table.
In a one-to-many relationship, one primary key in a record can only ever match one other foreign key in another table.
A foreign key uniquely identifies a row of another table and is defined in the same table.
A foreign key uniquely identifies a row of another table and is defined in the same table.
What is the purpose of a primary key in a database?
What is the purpose of a primary key in a database?
How does a foreign key differ from a primary key in a database?
How does a foreign key differ from a primary key in a database?
What distinguishes a flat file database from a relational database?
What distinguishes a flat file database from a relational database?
Define a one-to-one relationship between tables in a database.
Define a one-to-one relationship between tables in a database.
Describe a one-to-many relationship between tables in a database.
Describe a one-to-many relationship between tables in a database.
Flat file or relational database A flat file database: is a collection of data held in a single table, meaning data can only be viewed in a limited way. Relational database: data may be held in a number of tables where links (or relationships) are created to connect the data in different tables to each other. Lesson objectives Identify different database structures and the use of primary keys and foreign keys. Describe the need database tables. and properties of relationships between
Flat file or relational database A flat file database: is a collection of data held in a single table, meaning data can only be viewed in a limited way. Relational database: data may be held in a number of tables where links (or relationships) are created to connect the data in different tables to each other. Lesson objectives Identify different database structures and the use of primary keys and foreign keys. Describe the need database tables. and properties of relationships between
Primary and foreign keys Primary keys: Primary keys is the key that is unique from others. Foreign keys: Foreign keys is a field in one table that uniquely identifies a row of another table. Foreign key is defined in a second table but it refers to the primary key in the first table. Lesson objectives Identify different database structures and the use of primary keys and foreign keys. Describe the need database tables. and properties of ______ between
Primary and foreign keys Primary keys: Primary keys is the key that is unique from others. Foreign keys: Foreign keys is a field in one table that uniquely identifies a row of another table. Foreign key is defined in a second table but it refers to the primary key in the first table. Lesson objectives Identify different database structures and the use of primary keys and foreign keys. Describe the need database tables. and properties of ______ between
When two tables are joined together a relationship is created between them, as between Cars and Customers. There are different types of relationship depending on the kind of connection made. Lesson objectives Identify different database structures and the use of primary keys and foreign keys. Describe the need database tables. and properties of relationships between
When two tables are joined together a relationship is created between them, as between Cars and Customers. There are different types of relationship depending on the kind of connection made. Lesson objectives Identify different database structures and the use of primary keys and foreign keys. Describe the need database tables. and properties of relationships between
One-to-many: where for one primary key in a record there are many matches to other foreign keys in another table. Lesson objectives Identify different database structures and the use of primary keys and foreign keys. Describe the need database tables. and properties of relationships between
One-to-many: where for one primary key in a record there are many matches to other foreign keys in another table. Lesson objectives Identify different database structures and the use of primary keys and foreign keys. Describe the need database tables. and properties of relationships between
Flat file or relational ______base A flat file ______base: is a collection of ______ held in a single table, meaning ______ can only be viewed in a limited way. Relational ______base: ______ may be held in a number of tables where links (or relationships) are created to connect the ______ in different tables to each other. Lesson objectives Identify different ______base structures and the use of primary keys and foreign keys. Describe the need ______base tables. and properties of relationships between
Flat file or relational ______base A flat file ______base: is a collection of ______ held in a single table, meaning ______ can only be viewed in a limited way. Relational ______base: ______ may be held in a number of tables where links (or relationships) are created to connect the ______ in different tables to each other. Lesson objectives Identify different ______base structures and the use of primary keys and foreign keys. Describe the need ______base tables. and properties of relationships between
Match the following terms with their definitions:
Match the following terms with their definitions:
Match the following relationships with their descriptions:
Match the following relationships with their descriptions:
Match the following terms with their usage:
Match the following terms with their usage:
Match the following types of databases with their descriptions:
Match the following types of databases with their descriptions:
Match the following terms with their properties:
Match the following terms with their properties:
