Drupal Table Description


User. This is the table used by the "Access Rules" section for banning usernames, IPs, etc.

accesslog
Statistics. This stores the accesslog if Drupal is collecting statistics.

aggregator_category
Aggregator. Store the categories feeds may belong to.

aggregator_category_feed
Aggregator. Links feeds to categories.

aggregator_category_item
Aggregator. Links feed items to categories.

aggregator_feed
Aggregator. Store the feeds that the Aggregator module pulls from.

aggregator_item
Aggregator. Store the items that the Aggregator module has pulled for the various configured feeds.

authmap
User. This stores a map to the authentication module used to authentication each user in the database.

blocks
Block. This stores information about blocks provided by every module installed, including custom blocks.

blocks_role
Block. Stores the roles permitted to view blocks in the system.

boxes
Block. Administrator created blocks.

cache
System. The general cache of data, used by many modules.

cache_filter
System. I have no idea what this table is used for.

cache_menu
System. I have no idea what this table is used for.

cache_page
System. I have no idea what this table is used for.

cache_views
Views. Used to cache information related to views.

client
Drupal. Used to record Drupal client sites. I believe this is the list of sites that others have logged in from if you use the Drupal module.

client_system
Drupal. I'm not exactly certain what this table is for.

comments
Comment. Stores all comments made on your Drupal site.

contact
Contact. Stores the emails sent via a contact form.

files
Upload. Stores information about files uploaded via the file upload module (and used by some other modules too).

file_revisions
Upload. Associated file revisions with node revisions allowing different node revisions to have different versions of a file associated with them.

filters
Filter. Stores information about the body content filters used in your install.

filter_formats
Filter. Associates filter formats and settings with a body content filter.

flood
Watchdog. Used to detect floods from requests coming from a set.

forum
Forum. Used to link forum posts with the forum topic.

history
Node. Used to track which nodes are read/unread.

locales_meta
Locale. Something to do with language translation.

locales_source
Locale. Something to do with language translation.

locales_target
Locale. Something to do with language translation.

menu
Menu. Storage of menu module customizations.

node
Node. The main table for storing general node information, including the title, node number, dates, workflow state, but it does not store most of the actual content.

node_access
Node. Storage of per-node access permissions.

node_comment_statistics
Comment. Notes certain statistics related to the number of comments and how recently comments have been made on a node.

node_counter
Statistics. Records the view count for each node.

node_revisions
Node. Stores information about node revisions, including the main content of the node.

node_type
Node. Stores information about the custom node types.

permission
User. Stores the permissions that have been assigned to each role.

poll
Poll. Extra information associated with poll nodes.

poll_choices
Poll. Associates the available choices with a poll node.

poll_votes
Poll. Votes by visitors on a poll node.

profile_fields
Profile. Definitions of available profile fields.

profile_values
Profile. Profile field values associated with a particular user.

role
User. Assigns role IDs and names to all the roles in the system.

search_dataset
Search. Something to do with search.

search_index
Search. The search index.

search_total
Search. The number of times a given word appears on the site.

sequences
System. The current counter for each of the sequence IDs.

sessions
User. User session tracking data stored in the database.

system
System. Information about installed modules.

term_access
Taxonomy Access Control. Access control per category.

term_access_defaults
Taxonomy Access Control. Access control per vocabulary.

term_data
Taxonomy. Definition of taxonomy terms.

term_hierarchy
Taxonomy. List of parent terms for each taxonomy term.

term_node
Taxonomy. Table linking taxonomy terms to nodes.

term_relation
Taxonomy. Relationships between taxonomy terms.

term_synonym
Taxonomy. Alternative names for a taxonomy term.

tinymce_role
TinyMCE WYSIWYG Editor. Roles assigned to use TinyMCE profiles.

tinymce_settings
TinyMCE WYSIWYG Editor. Definition of TinyMCE profiles.

url_alias
Path. Path aliases recorded to nodes.

users
User. User records.

users_roles
User. Link table between users and roles.

variable
System. Administrative settings and other site-wide variables.

view_argument
Views. Definition of arguments to a view.

view_exposed_filter
Views. Definition of exposed filters in a view.

view_filter
Views. Definition of filters in a view.

view_sort
Views. Definition of sorting in a view.

view_tablefield
Views. Something to do with the views plugin.

view_view
Views. Basic information about a view.

vocabulary
Taxonomy. Definition of taxonomy vocabularies.

vocabulary_node_types
Taxonomy. Associates vocabularies with node types.

watchdog
Watchdog. Records watchdog log entries.
source http://contentment.org/2007/04/drupal-database-tables.html

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