11. A search database system, comprising: a hierarchical database to store a set of data in a hierarchical manner, wherein each of a plurality of points in the hierarchy has a unique identifier; a hierarchical database engine coupled with the hierarchical database, the hierarchical database engine to search the set of data stored in the hierarchical database; a document generator coupled with the hierarchical database engine, the document generator to create a different document from the data stored under each of the plurality of points in the hierarchical database; an inverted index; an inverted index engine coupled with the document generator, the inverted index engine to index each document and the associated unique identifiers in the inverted index, and search the inverted index; a search server user interface, coupled with the hierarchical database engine and the inverted index engine, the search server user interface to receive a single search query that has syntax identifying an unstructured search string within a structured search query to automatically cause a search of the inverted index and use of the result to automatically search the hierarchical database, the search server user interface including: a parser to extract the unstructured search string from the single search query and forward the extracted unstructured search string to the inverted index engine to cause a search of the inverted index; a structured query generator to receive a result of the inverted index search that includes the one or more unique identifiers of the documents that meet the search, and for each of the unique identifiers in the result, to generate a separate search query from the single search query by replacing the unstructured search string in the structured search query with that unique identifier, and forward the separate search query to the hierarchical database engine to cause a search of the hierarchical database according to the separate search query; wherein the hierarchical database includes one or more sub-trees branching from a tree root node, wherein each sub-tree includes one or more nodes starting at a sub-tree root node and includes at least one value, and wherein the unique identifier associated with each of the plurality of documents corresponds to the sub-tree root node; wherein each node existing directly below the tree root node represents a private sub-tree, wherein values and node information in the private sub-tree are private to an organization; and wherein the syntax for the single search query includes a SELECT clause and a FROM clause, wherein the SELECT clause includes syntax to identify a path in the hierarchical database starting at the tree root node, and wherein the FROM clause includes the unstructured search string.
11. A search database system, comprising: a hierarchical database to store a set of data in a hierarchical manner, wherein each of a plurality of points in the hierarchy has a unique identifier; a hierarchical database engine coupled with the hierarchical database, the hierarchical database engine to search the set of data stored in the hierarchical database; a document generator coupled with the hierarchical database engine, the document generator to create a different document from the data stored under each of the plurality of points in the hierarchical database; an inverted index; an inverted index engine coupled with the document generator, the inverted index engine to index each document and the associated unique identifiers in the inverted index, and search the inverted index; a search server user interface, coupled with the hierarchical database engine and the inverted index engine, the search server user interface to receive a single search query that has syntax identifying an unstructured search string within a structured search query to automatically cause a search of the inverted index and use of the result to automatically search the hierarchical database, the search server user interface including: a parser to extract the unstructured search string from the single search query and forward the extracted unstructured search string to the inverted index engine to cause a search of the inverted index; a structured query generator to receive a result of the inverted index search that includes the one or more unique identifiers of the documents that meet the search, and for each of the unique identifiers in the result, to generate a separate search query from the single search query by replacing the unstructured search string in the structured search query with that unique identifier, and forward the separate search query to the hierarchical database engine to cause a search of the hierarchical database according to the separate search query; wherein the hierarchical database includes one or more sub-trees branching from a tree root node, wherein each sub-tree includes one or more nodes starting at a sub-tree root node and includes at least one value, and wherein the unique identifier associated with each of the plurality of documents corresponds to the sub-tree root node; wherein each node existing directly below the tree root node represents a private sub-tree, wherein values and node information in the private sub-tree are private to an organization; and wherein the syntax for the single search query includes a SELECT clause and a FROM clause, wherein the SELECT clause includes syntax to identify a path in the hierarchical database starting at the tree root node, and wherein the FROM clause includes the unstructured search string. 16. The search database system of claim 11 , wherein the single search query is formed in response to a selection of at least one item returned as a result from a previous unstructured search, wherein the structured search query includes the item selected, and the unstructured search string within the structured search query corresponds to the previous unstructured search string query.