A registry is just a list of items that you would like to get for the baby. It is tied to a specific store and allows friends, family, etc. who wish to buy you (the baby) gifts to get exactly what you want. So, instead of buying you a crib they get you the white, convertible, crib at Babies R Us.
2) Import data from specific fields from the source file to create table 2 Invoices BUT also include at least one field associated with data from table 1 as the Foreign key and then use that field to to connect to the Primary key of table 1 Customers.rders is the child. I want to link Orders to Customers so I created a foreign key field in the Orders table called CustomerID and linked it to the Customers primary key. All great so far. But CustomerID in the Orders Table is empty of the primary key data for a relationship.
While creating (or modifying) a MySQL table, you can set a FOREIGN KEY CONSTRAINT to a column of the table. A foreign key is a column or combination of columns which can be used to set a link between the data in two tables.ySQL create table with SET NULL. MySQL allows you to create table with SET NULL option. Doing so will delete or update the row from the parent table, and set the foreign key column or columns in the child table to.