Function reference • dm

Basic
`dm()` `new_dm()` `dm_get_con()` `dm_get_tables()` `is_dm()` `as_dm()` `validate_dm()`	Data model class
`dm_from_src()`	Load a dm from a remote data source
Tables
`dm_add_tbl()`	Add tables to a `dm`
`dm_rm_tbl()`	Remove tables
`dm_mutate_tbl()`	Update tables in a `dm`
`dm_select_tbl()` `dm_rename_tbl()`	Select and rename tables
`pull_tbl()`	Retrieve a table
`dm_bind()`	Merge several `dm`
Primary keys
`dm_add_pk()`	Add a primary key
`dm_has_pk()`	Check for primary key
`dm_get_all_pks()`	Get all primary keys of a `dm` object
`dm_rm_pk()`	Remove a primary key
`enum_pk_candidates()` `dm_enum_pk_candidates()`	Primary key candidate
Foreign keys
`dm_add_fk()`	Add foreign keys
`dm_get_all_fks()`	Get foreign key constraints
`dm_rm_fk()`	Remove foreign keys
`dm_enum_fk_candidates()` `enum_fk_candidates()`	Foreign key candidates
`dm_is_referenced()`	Check foreign key reference
`dm_get_referencing_tables()`	Get the names of referencing tables
Visualize
`dm_draw()`	Draw a diagram of the data model
`dm_set_colors()` `dm_get_colors()` `dm_get_available_colors()`	Color in database diagrams
`dm_paste()`	Create R code for a dm object
Select columns
`dm_select()`	Select columns
`dm_rename()`	Rename columns
Flatten
`dm_flatten_to_tbl()` `dm_squash_to_tbl()`	Flatten a part of a `dm` into a wide table
`dm_join_to_tbl()`	Join two tables
`dm_disambiguate_cols()`	Resolve column name ambiguities
Zoom
`dm_zoom_to()` `dm_insert_zoomed()` `dm_update_zoomed()` `dm_discard_zoomed()`	Mark table for manipulation
`filter(<zoomed_dm>)` `mutate(<zoomed_dm>)` `transmute(<zoomed_dm>)` `select(<zoomed_dm>)` `relocate(<zoomed_dm>)` `rename(<zoomed_dm>)` `distinct(<zoomed_dm>)` `arrange(<zoomed_dm>)` `slice(<zoomed_dm>)` `group_by(<zoomed_dm>)` `ungroup(<zoomed_dm>)` `summarise(<zoomed_dm>)` `count(<zoomed_dm>)` `tally(<zoomed_dm>)` `pull(<zoomed_dm>)` `compute(<zoomed_dm>)`	dplyr table manipulation methods for zoomed dm objects
`unite(<zoomed_dm>)` `separate(<zoomed_dm>)`	tidyr table manipulation methods for zoomed dm objects
`left_join(<zoomed_dm>)` `inner_join(<zoomed_dm>)` `full_join(<zoomed_dm>)` `right_join(<zoomed_dm>)` `semi_join(<zoomed_dm>)` `anti_join(<zoomed_dm>)`	dplyr join methods for zoomed dm objects
`head(<zoomed_dm>)` `tail(<zoomed_dm>)`	utils table manipulation methods for `zoomed_dm` objects
Wrap
`dm_wrap_tbl()`	Wrap dm into a single tibble dm
`dm_unwrap_tbl()`	Unwrap a single table dm
`dm_nest_tbl()`	Nest a table inside its dm
`dm_pack_tbl()`	dm_pack_tbl()
`dm_unnest_tbl()`	Unnest columns from a wrapped table
`dm_unpack_tbl()`	Unpack columns from a wrapped table
Materialize
`compute(<dm>)` `collect(<dm>)`	Materialize
Upload
`copy_dm_to()`	Copy data model to data source
`dm_rows_insert()` `dm_rows_update()` `dm_rows_patch()` `dm_rows_upsert()` `dm_rows_delete()` `dm_rows_truncate()`	Modifying rows for multiple tables
`rows_insert(<tbl_dbi>)` `rows_update(<tbl_dbi>)` `rows_patch(<tbl_dbi>)` `rows_upsert(<tbl_dbi>)` `rows_delete(<tbl_dbi>)` `sql_rows_insert()` `sql_rows_update()` `sql_rows_patch()` `sql_rows_delete()` `sql_returning_cols()` `sql_output_cols()`	Updating database tables
`rows_truncate()` `sql_rows_truncate()`	Truncate all rows
`get_returned_rows()` `has_returned_rows()`	Extract and check the RETURNING rows
Filter
`dm_filter()` `dm_apply_filters()` `dm_apply_filters_to_tbl()`	Filtering
`dm_get_filters()`	Get filter expressions
Table surgery
`decompose_table()`	Decompose a table into two linked tables
`reunite_parent_child()` `reunite_parent_child_from_list()`	Merge two tables that are linked by a foreign key relation
Check keys and cardinalities
`dm_examine_constraints()`	Validate your data model
`dm_examine_cardinalities()`	Learn about your data model
`check_cardinality_0_n()` `check_cardinality_1_n()` `check_cardinality_1_1()` `check_cardinality_0_1()` `examine_cardinality()`	Check table relations
`check_key()`	Check if column(s) can be used as keys
`check_subset()`	Check column values for subset
`check_set_equality()`	Check column values for set equality
Database schemas
`db_schema_create()`	Create a schema on a database
`db_schema_drop()`	Remove a schema from a database
`db_schema_exists()`	Check for existence of a schema on a database
`db_schema_list()`	List schemas on a database
Miscellaneous
`dm_nycflights13()`	Creates a dm object for the nycflights13 data
`dm_financial()` `dm_financial_sqlite()`	Creates a dm object for the Financial data
`dm_pixarfilms()`	Creates a dm object for the pixarfilms data
`dm_nrow()`	Number of rows
`dm_ptype()`	Prototype for a dm object
`pack_join()`	Pack Join

Reference

Basic

Tables

Primary keys

Foreign keys

Visualize

Select columns

Flatten

Zoom

Wrap

Materialize

Upload

Filter

Table surgery

Check keys and cardinalities

Database schemas

Miscellaneous