chore: Initial commit (SCHEMA)

data/schema/SCHEMA-SCHEMA

@@ -0,0 +1,61 @@
+schema:             SCHEMA-SCHEMA
+ref:                nx3.schema
+dir-name:           schema
+primary-key:        inetnum  cidr
+primary-key:        inet6num cidr
+primary-key:        role     nic-hdl
+primary-key:        person   nic-hdl
+owners:             mntner
+key:                schema           required single   primary schema > [name]
+key:                ref              required single   > [schema]
+key:                primary-key      optional multiple > [schema] [key]
+key:                dir-name         required single
+key:                owners           optional single   > [schema]
+key:                mnt-by           required multiple   lookup=nx3.mntner > [mntner]
+key:                remarks          optional multiple > [text]...
+key:                source           required single     lookup=nx3.registry
+key:                network-owner    optional multiple > [parent-schema]
+key:                key              required multiple > [key-name]
+                    {required|optional|recommend|deprecate}
+                    {single|multiple} {primary|} {schema|}
+                    lookup=str '>' [spec]...
+mnt-by:             NX3-MNT
+source:             NX3
+remarks:            # option descriptions
+                    Attribute names must match /[a-zA-Z]([a-zA-Z0-9_\-]*[a-zA-Z0-9])?/.
++
+                    required
+                    :    object required to have at least one
+                    optional
+                    :    object not required to have at least one
++
+                    single
+                    :    only one of this type allowed
+                    multiple
+                    :    more than one of this type allowed
++
+                    primary
+                    :    use field as lookup key for lookup
+                    * only one allowed per schema
+                    * does not allow newlines
++
+                    schema
+                    :    use field name as the name of the schema
+                    * only one allowed per schema
+                    * does not allow newlines
++
+                    lookup
+                    :    schema match to use for related record
++
+                    \> option specs
+                    :    defines the option specifications for the key.
+                    * must come last in option list
++
+                    [label] string value. A positional string argument required.
+                    Text inside brackets represent a label for the string and must match the same rules as attribute names.
+                    If follwed by '...' values are gathered as an array.
++
+                    {enum1|enum2|} enumeration. One option in pipe('|') deliniation is allowed.
+                    If there is a trailing pipe it means the enum is optional. Enum values must match the same rules as attribute names.
++
+                    'literal' Literal value. literal text value which must not contain any whitespace or single quotes.