However, many databases don't support multiple column foreign key constraints, so imagine what happens when someone types the wrong county name when entering a county. By each and every table having a unique row
Table 1: photos Table 2: photo_galleries Table 3: photo_galleries_photos Column conventions - Always lowercase - alpha-underscore - Primary keys are always first -- "id" (e.g. users.id) - Foreign keys are always fk_table_id (e.g. fk_user_id) following any primary id. (Pluralization...
Since indexes are always related to a table or view, it makes the most sense to use the name of the table or view, as well as the column(s) they index, in the index name, along with some characters that specify the type of index it is. This naming convention also allows you, if ...
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Specifying Character Sets and Collations Collation Naming Conventions Server Character Set and Collation Database Character Set and Collation Table Character Set and Collation Column Character Set and Collation Character String Literal Character Set and Collation The National Character Set Character...
9if (Schema::hasIndex('users', ['email'], 'unique')) { 10 // The "users" table exists and has a unique index on the "email" column... 11}Database Connection and Table OptionsIf you want to perform a schema operation on a database connection that is not your application's defaul...
5if (Schema::hasColumn('users', 'email')) { 6 // The "users" table exists and has an "email" column... 7}Database Connection & Table OptionsIf you want to perform a schema operation on a database connection that is not your application's default connection, use the connection metho...
Table typeDescription Internal workflow system tables Store information about the schema or structure of the application. These tables are used internally to implement workflow rules, lookups, and so on. User-defined tables Hold the data for the application. Table Naming Conventions Internal workflow ...
Table Names The most important thing to keep in mind when it comes to naming any SQL Server object is that your business needs may change down the road. You may be thinking your application has a relatively small backend but your next release may include some type of auditing, which makes...
The migration file contains two key methods:up()anddown(). Theup()method defines the changes you want to apply to your database, such as creating a table or adding a column. Thedown()method does the opposite: it reverses those changes, such as dropping the table or removing the column...