Docyrus Data Source Design

Design a data source's schema with docyrus studio, then validate the schema and test it with real records before handing it off. A data source is a collection of records with a typed schema (fields). This skill is the schema-authoring counterpart to record querying (docyrus ds / dsql).

For the full CLI flag reference see the docyrus-cli-app skill; for platform concepts see docyrus-platform; for general schema-design principles see the database-architect skill. This skill is the data-source-specific workflow that ties them together.

Workflow

Follow these phases in order. Do not skip validation/testing — an unvalidated schema is not done.

Confirm the app and auth. Every data source belongs to an app. Resolve the app first:
```
docyrus auth who --json            # confirm an active session + tenant
docyrus apps list --json           # find the target appSlug / appId
```
If there is no session, stop and ask the user to run docyrus auth login (interactive).
Model the entities. Turn the requirement into data sources and fields before issuing commands. Per entity decide: the singular/plural name, the slug, each attribute → field type, which fields are selections (need enums), and which are relations to other data sources. Sketch this for the user and confirm naming when the domain is ambiguous. See references/field-types.md to pick types.
Create the data source. See Create a data source. Create parent/independent data sources before the ones that relate to them (you need the parent's ID for relation fields).
Add fields. Batch-create where possible (see Add fields). Set relation fields' relationDataSourceId to the target data source's ID.
Add enum options for every selection/status field. See Add enum options.
Validate the schema. Re-read the data source with its fields and confirm every field landed with the right type/config. See Validate.
Test with sample records. Create, query (with relation expansion), and then delete throwaway records to prove the schema actually accepts and returns data. See Test.

A complete worked example (a 2-table CRM with a relation, enums, validation, and tests) is in references/workflow-examples.md. Read it before doing your first end-to-end build.

Studio command cheat-sheet

Selectors are exclusive pairs — pass exactly one of each required pair, the CLI resolves the other: --appId | --appSlug, --dataSourceId | --dataSourceSlug, --fieldId | --fieldSlug. Write commands take inline --data '<json>' or --from-file ./payload.json (JSON only); explicit flags override overlapping JSON keys. Append --json for machine-readable output.

Create a data source

docyrus studio create-data-source --appSlug crm \
  --title "Contacts" --name "Contact" --slug "contacts" --icon "users" --json

title = plural display label ("Contacts"); name = singular entity name ("Contact"); slug = url-safe lowercase id ("contacts"). All three are required. --icon persists but is not echoed in responses.
studio only creates simple data sources. Omit --type — it defaults to simple and the server always stores simple. Passing any other value (--type advanced, external, …) is rejected with HTTP 400 ("Invalid data received for parameters"), not silently coerced. advanced/external/system data sources are provisioned through other flows, not here.
Access control is optional and goes through --data (the orgchart-aware RLS levels):
```
docyrus studio create-data-source --appSlug crm --title "Deals" --name "Deal" --slug "deals" \
  --data '{"data_access":"PRIVATE","unit_peer_access":"READ"}' --json
```
data_access ∈ OPEN | PUBLIC_EDIT | PUBLIC_READ | PRIVATE; unit_peer_access ∈ NONE | READ | EDIT | FULL. See references/field-types.md for what each level grants.
Simple data sources ship with built-in static fields you never create yourself (and cannot reuse as slugs): id, name, description, created_on, created_by, last_modified_on, last_modified_by, record_owner, followers, mentions, color, icon, type, parent, sort_order, plus internal columns. The full reserved set is in references/field-types.md. name already exists as the record title — do not add a name field; use it directly.

Add fields

One field:

docyrus studio create-field --appSlug crm --dataSourceSlug contacts \
  --name "Email" --slug "email" --type "email" --json

Batch (preferred — one round-trip per data source):

docyrus studio create-fields-batch --appSlug crm --dataSourceSlug contacts --data '[
  { "name": "Email",        "slug": "email",        "type": "email" },
  { "name": "Phone",        "slug": "phone",        "type": "phone" },
  { "name": "Lifetime value","slug": "ltv",         "type": "money" },
  { "name": "Status",       "slug": "status",       "type": "select" },
  { "name": "Account",      "slug": "account",      "type": "relation",
    "relation_data_source_id": "<accounts-data-source-id>" }
]' --json

name, slug, type are required per field. type accepts the bare form (text, select, relation) or the canonical field- form (field-text) — both work.
Flags vs. batch-item keys differ in casing. The single create-field command takes camelCase flags (--relationDataSourceId, --defaultValue, --readOnly, --sortOrder, --tenantEnumSetId). create-fields-batch JSON items must use the API's snake_case keys (relation_data_source_id, default_value, read_only, sort_order, tenant_enum_set_id, options, validations). ⚠️ camelCase keys inside batch items are silently dropped — a relation built with relationDataSourceId in a batch item lands with a null target. (Enum batch items are the exception — they use camelCase: sortOrder, isFinalOption.)
defaultValue/default_value is a string and is type-checked server-side at the schema level. Enum-backed selects/status/relation defaults must be the enum row UUID, not the label (a label returns HTTP 400). Many types reject defaults entirely. See references/field-types.md.
Slugs are lowercased for simple data sources. Reserved slugs (see above) are rejected with HTTP 400.

Add enum options

Selection fields (select, multiSelect, status, radioGroup, tagSelect, userSelect) hold UUIDs that reference enum rows. After creating the field, add its options:

docyrus studio create-enums --appSlug crm --dataSourceSlug contacts --fieldSlug status --data '[
  { "name": "Lead",     "color": "#94a3b8", "sortOrder": 1 },
  { "name": "Active",   "color": "#22c55e", "sortOrder": 2 },
  { "name": "Churned",  "color": "#ef4444", "sortOrder": 3, "isFinalOption": true }
]' --json

Per-option keys: name (required), slug, color, icon, description, sortOrder, isFinalOption, forceDescription, forceFollowupDate, parent (hierarchical). To reuse one option list across many fields, point each field at a shared set with --tenantEnumSetId <id> instead of recreating options.

Manage / inspect

docyrus studio list-data-sources --appSlug crm --json                              # NB: --expand fields does NOT embed fields
docyrus studio get-data-source   --dataSourceId <id> --json                        # by data source ID only — no app/slug selectors
docyrus studio list-fields       --appSlug crm --dataSourceSlug contacts --json     # authoritative way to inspect fields
docyrus studio list-enums        --appSlug crm --dataSourceSlug contacts --fieldSlug status --json
docyrus studio update-field      --appSlug crm --dataSourceSlug contacts --fieldId <id> --data '{"name":"Primary email"}' --json
docyrus studio delete-field      --appSlug crm --dataSourceSlug contacts --fieldSlug email --json
docyrus studio delete-data-source --appId <id> --dataSourceSlug contacts --json    # archives (soft delete)
docyrus studio permanent-delete-data-source --appId <id> --dataSourceId <id> --json # hard delete (requires the ID)

get-data-source is the one studio read that takes only --dataSourceId (no --appSlug/--dataSourceSlug). list-data-sources --expand fields returns the data sources but not their fields — use list-fields to see fields.

Relations

Link a child to a parent: add a relation field on the child data source whose relationDataSourceId is the parent's data source ID (single-valued, stored as a UUID FK). Example: contacts.account → relation → accounts.
Many references: use multiSelect/userMultiSelect/tagSelect (stored as uuid[]) when a record points to several rows.
Show the children from the parent side: add a list field (a virtual/computed reverse lookup). list is read-only, has no stored column, and takes no default value.
Query across a relation (for testing):
- Filter with rel_<relationSlug>/<fieldSlug> (e.g. rel_account/name). This form is filter-only — it is not a column name.
- Expand to a nested object: add the relation field to --columns and pass --expand relation → the value comes back as { "id": …, "name": … }.
- Spread inline: ...<relationFieldSlug>(field) (e.g. ...account(name)) flattens the related field into the row — alias to avoid collisions, since a related name overwrites the row's own name.
- Or pull children with --childQueries (see docyrus ds list --help).

Create parent data sources first so their IDs exist when you wire up relation fields.

Critical rules

studio creates only simple data sources. Omit --type; any non-simple value is rejected with HTTP 400.
Batch field items use snake_case keys (relation_data_source_id, default_value, …); camelCase keys inside create-fields-batch JSON are silently dropped (e.g. a relation lands with a null target). The single create-field command uses camelCase flags instead. Enum batch items are camelCase (sortOrder, isFinalOption).
get-data-source resolves by --dataSourceId only — no app/slug selectors. Get the ID from list-data-sources.
Simple data sources do not type-check record values on write. Passing a label instead of a UUID (e.g. status: "Lead") is stored as a raw string and simply won't resolve to the enum — it does not error. Always write enum row IDs / record IDs. (Strict type checks apply at the schema level — create-field defaults — and to advanced data sources.)
name and description already exist on every simple data source (record title + notes). Reserved slugs are rejected — never recreate them as fields.
Enum-backed defaults are UUIDs, not labels. Create the field, then read back the enum row IDs (list-enums) before setting a defaultValue.
Virtual/computed types take no value and no default: formula, list, button, taskList, display, autonumber, identity. Don't try to set defaults or write to them.
Validate then test, every time. Re-read the schema and round-trip at least one record. Delete any throwaway test records you create.
Create independent data sources before dependent (relation-holding) ones.

Validate

After authoring, confirm the schema is exactly what you intended:

docyrus studio get-data-source --dataSourceId <id> --json — confirm type, slug, access fields. (By ID only; grab the ID from list-data-sources.)
docyrus studio list-fields --appSlug <app> --dataSourceSlug <ds> --json — confirm every field exists with the right type, relation_data_source_id, default_value, options. (This is the authoritative field check — list-data-sources --expand fields does not return fields.)
For each selection field: docyrus studio list-enums ... --json — confirm options and capture their IDs.
docyrus dsql schema data-source <app> <ds> — confirm the queryable columns/relations the engine actually exposes.

Detailed checklist (what "correct" looks like per field type) is in references/workflow-examples.md.

Test

Prove the schema works against real data:

Insert a sample record covering required fields, a select (by enum UUID), and a relation (by parent record ID):

docyrus ds create crm contacts --data '{"name":"Jane Doe","email":"jane@x.com","status":"<enum-id>","account":"<account-id>"}' --json

Read it back with expansion to confirm types resolve and relations join:

docyrus ds list crm contacts --columns "name, email, status, account" --expand relation --json
# status (enum) and account (relation) come back as nested { id, name } objects

Exercise a filter, a relation filter (rel_account/name), and a default value (omit a field that has a default and confirm it fills in).
Clean up: docyrus ds delete crm contacts <recordId> for every test record.

Full test playbook (edge cases, default-value checks, relation round-trip) is in references/workflow-examples.md.

References

references/field-types.md — Full field-type catalog: intent → type, configuration (options/relationDataSourceId/enums), stored DB type, default-value rules, reserved slugs, and access-control levels.
references/workflow-examples.md — End-to-end worked example (build → validate → test a related 2-table schema), plus the validation checklist and test playbook.

docyrus-data-source-design