Ddl

Creates what is missing, then checks the format of what exists: the default.

Creates nothing and checks that each structure exists in the format this version reads: for an account without DDL rights, whose schema a migration or an earlier auto run created. A missing or incompatible one refuses the startup, naming what is missing.

Creates and checks nothing: the schema is someone else's, and a missing structure fails at its first use.

Returns an immutable kotlin.enums.EnumEntries list containing the constants of this enum type, in the order they're declared.

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Returns an array containing the constants of this enum type, in the order they're declared.

Whether this mode checks what exists: AUTO and VALIDATE.

Whether this mode creates what is missing: AUTO.

Makes sure of the structure describe names as this mode says, with the backend's native checks: under AUTO creates it unless exists says it is there, and validates it when it is; under VALIDATE refuses it, naming it, when it does not exist, and validates it when it does; under NONE does nothing. A backend whose create is idempotent and checks what it finds leaves exists out: it then always creates.

Makes sure of the structure missing names as this mode says, with no round trip to ask whether it exists: under AUTO creates it, which must be idempotent (CREATE … IF NOT EXISTS, an index creation, a format record claimed), then validates it; under VALIDATE validates it alone; under NONE does nothing. validate checks the format of what it finds and answers whether the structure exists; one that does not refuses the startup, naming it.