How Do You Add a Foreign Key to an Existing

question 102

Multiple Choice

How do you add a foreign key to an existing table created by another module?

• A) Create etc/db_schema.xml file with the table node and constraint child node Create etc/db_schema.xml file with the table node and constraint child node
• B) Run the command bin/magento setup:db-schema:upgrade <table> <constraint declaration> Run the command bin/magento setup:db-schema:upgrade <table> <constraint declaration>
• C) This can only be done with raw SQL in a Schema Patch file
• D) Create the etc/db_constraints.xml file and specify foreign key there in the constraint node Create the etc/db_constraints.xml file and specify foreign key there in the constraint node

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Definitions:

Unitary Elasticity

A situation in which the quantity demanded or supplied of a good changes by the same percentage as the change in price.

Demand Curve

A graphical representation of the relationship between the price of a good or service and the quantity demanded for a given period, typically showing a downward slope.

Elastic Demand

A situation where the demand for a product is sensitive to price changes.

Fresh Tomatoes

Refers to tomatoes that are recently harvested and have not been processed, often used in cooking for their flavor and nutritional value.