4888 results about "SQL" patented technology

A real-time system incorporating speech recognition and linguistic processing for recognizing a spoken query by a user and distributed between client and server, is disclosed. The system accepts user's queries in the form of speech at the client where minimal processing extracts a sufficient number of acoustic speech vectors representing the utterance. These vectors are sent via a communications channel to the server where additional acoustic vectors are derived. Using Hidden Markov Models (HMMs), and appropriate grammars and dictionaries conditioned by the selections made by the user, the speech representing the user's query is fully decoded into text (or some other suitable form) at the server. This text corresponding to the user's query is then simultaneously sent to a natural language engine and a database processor where optimized SQL statements are constructed for a full-text search from a database for a recordset of several stored questions that best matches the user's query. Further processing in the natural language engine narrows the search to a single stored question. The answer corresponding to this single stored question is next retrieved from the file path and sent to the client in compressed form. At the client, the answer to the user's query is articulated to the user using a text-to-speech engine in his or her native natural language. The system requires no training and can operate in several natural languages.

Query objects are created by a client process. The query objects have one or more sub-query objects and one or more execute methods that are capable of operating on their respective query object to produce one or more query expressions. All of the execute methods are capable of producing the respective query expression that is compatible with a structured query language. A compound query contains one or more boolean expressions of one or more of the query objects. The compound query has one or more compound execute methods which invoke one or more the execute methods of each of the query objects. Each of the execute methods returns their respective query expression and the compound execute method uses one or more common table expressions to combine the query expressions to form a single compound query expression that represents the boolean expression. This single expression can be execute against a database to return a result without executing any of the query expressions against the database individually.

A method and apparatus for efficiently processing data requests in a network oriented n-tier database environment is presented. According to one embodiment of the invention, certain or all data from the tables of a database server device can be maintained in tables on the client device in a client side database cache server system. This local cache allows the network oriented n-tier database system to eliminate the expense of repetitive network transmissions to respond to duplicate queries for the same information. Additionally, the local client device may also keep track of what data is cached on peer network nodes. This allows the client to request that data from a peer database cache server and off load that burden from the database server device. Moreover, the local client may also keep statistics regarding the frequency of requested data in order to optimize the data set maintained in the local database cache server.

A system, method, and apparatus are directed to managing a subscription to an RSS feed. A search component enables searching over a network for content associated with an RSS feed. In one embodiment, the search component receives a search query in the form of a structured query language (SQL), Boolean expression, or the like. The search component may search for content based on the search query and validate the RSS feed associated with the results from the search. A list of validated RSS feeds may be sent to the user. The user may then select from the list and subscribe to a validated RSS feed. In addition, the user may employ the search query as an RSS feed. Thus, the same search may be performed automatically and the results compared to the previous search results. If a change in the search results is detected, the user may be alerted.

A framework is provided for management of models. Management of data models or other types of models includes model change comparison and change implementation. For example, in the context of data warehouse models, model components and their process interactions are captured in a form such that different versions of a model can be automatically compared and any changes between versions determined. The framework provides the capability of capturing a model definition down to the level of an individual object and the semantics and relationships of each object. A model is represented and stored as a set of (1) unique object identifiers, (2) object metadata signatures that represent the semantics of objects, and (3) object relationships. Such model information can be stored in a relational database, against which a query, such as an SQL (Structured Query Language) query, can be executed to determine whether two models differ.

A database system providing SQL extensions for automated encryption and decryption of column data is described. In one embodiment, for example, in a database system, a method is described for providing automated encryption support for column data, the method comprises steps of: defining Structured Query Language (SQL) extensions for creating and managing column encryption keys, and for creating and managing database tables with encrypted column data; receiving an SQL statement specifying creation of a particular column encryption key; receiving an SQL statement specifying creation of a database table having particular column data encrypted with the particular column encryption key; and in response to a subsequent database operation that requires the particular column data that has been encrypted, automatically decrypting the particular column data for use by the database operation.

A method, system, and computer program product to make query processing more robust in the face of optimization errors. The invention validates the statistics and assumptions used for compiling a query as the query is executed and, when necessary, progressively re-optimizes the query in mid-execution based on the knowledge learned during its partial execution. The invention selectively places a number of CHECK operators in a query execution plan to validate the optimizer's cardinality estimates against actual cardinalities. Errors beyond a threshold trigger re-optimization, and the optimizer decides whether the old plan is still optimal and whether to re-use previously computed results. The invention addresses arbitrary SQL queries whose plans can contain sub-queries, updates, trigger checking, and view maintenance operations. The invention can handle concurrent update transactions or updates of common sub-expressions in a query execution plan without compromising consistency and isolation as locking information is tied to the record ID.

Disclosed herein is a method and system for integrating an enterprise's structured and unstructured data to provide users and enterprise applications with efficient and intelligent access to that data. Queries can be directed toward both an enterprise's structured and unstructured data using standardized database query formats such as SQL commands. A coprocessor can be used to hardware-accelerate data processing tasks (such as full-text searching) on unstructured data as necessary to handle a query. Furthermore, traditional relational database techniques can be used to access structured data stored by a relational database to determine which portions of the enterprise's unstructured data should be delivered to the coprocessor for hardware-accelerated data processing.

A computer implemented method for executing an ANSI SQL expression belonging to the SELECT-WHERE-equi-JOIN class on data residing in a distributed file system, said method comprising the steps of entering the ANSI SQL expression into a user interface; converting the ANSI SQL expression into a map-reduce program; running the map-reduce program on the distributed file system; storing the result set of the program in the distributed file system; and presenting the result set through a user interface.

A method for protecting database applications including analyzing the activity on the server, analyzing the response from the server, and blocking malicious or unauthorized activity. Commands are analyzed for suspicious or malicious SQL statements or access to unauthorized data. Server responses are monitored for suspicious results likely to have occurred from a successful attack or unauthorized access to data. When malicious or unauthorized activity occurs, activity by the source is blocked or an alert is issued.

A method and system for dynamically generating database queries is disclosed. The method and system include storing web interface data, including query attributes for a database, in one more tables. The attributes are then retrieved from the tables and displayed in a graphical user interface web page for user selection. Based on the attributes selected by the user, a SQL query is dynamically generated. The method and system further include displaying results of the SQL query to the user in graphical format, thereby enabling dynamic generation of custom queries.

A database system providing encrypted column data support with decrypt default functionality. In a database system, a method providing automated encryption support for column data comprises steps of: defining Structured Query Language (SQL) extensions for creating and managing column encryption keys and database tables with encrypted column data; receiving an SQL statement specifying creation of a column encryption key; receiving an SQL statement specifying creation of a database table having particular column data encrypted with the column encryption key; receiving an SQL statement specifying a default value to be provided in response to requests for the column data without decrypt permission; in response to a subsequent database operation requesting encrypted column data from a user with decrypt permission, automatically decrypting the column data; and in response to a subsequent database operation requesting the encrypted column data from a user without decrypt permission, returning the default value.

The TABLE function mechanism available in a RDBMS is used to integrate RDF models into SQL queries. The table function invocation takes parameters including an RDF pattern, an RDF model, and an RDF rule base and returns result rows to the SQL query that contain RDF triples resulting from the application of the pattern to the triples of the model and the triples inferred by applying the rule base to the model. The RDBMS includes relational representations of the triples and the rules. Optimizations include indexes and materialized views of the representations of the triples, precomputed inferred triples, and a method associated with the TABLE function that rewrites the part of the SQL query that contains the TABLE function invocation as an equivalent SQL string. The latter technique is generally applicable to TABLE functions.

The TABLE function mechanism available in a RDBMS is used to integrate RDF models into SQL queries. The table function invocation takes parameters including an RDF pattern, an RDF model, and an RDF rule base and returns result rows to the SQL query that contain RDF triples resulting from the application of the pattern to the triples of the model and the triples inferred by applying the rule base to the model. The RDBMS includes relational representations of the triples and the rules. Optimizations include indexes and materialized views of the representations of the triples, precomputed inferred triples, and a method associated with the TABLE function that rewrites the part of the SQL query that contains the TABLE function invocation as an equivalent SQL string. The latter technique is generally applicable to TABLE functions.

An exemplary scalable access filter that is used together with others like it in a virtual private network to control access by users at clients in the network to information resources provided by servers in the network is disclosed. Each access filter uses a local copy of an access control data base (3845) to determine whether an access request is made by a user. Each user belongs to one or more user groups and each information resource belongs to one or more information sets. Access is permitted or denied according to access policies, which define access in terms of the user groups and information sets. The first access filter in the path performs the access check, encrypts and authenticates the request; the other access filters in the path do not repeat the access check. The interface used by applications to determine whether a user has access to an entity is now an SQL query. The policy server (3811) assembles the information needed for the response to the query from various information sources, including source external to the policy server.

A dynamic application environment or system is described that includes a client, a run-time system, and a back-end database. The client comprises a workstation or desktop PC running browser software, such as Microsoft Internet Explorer or Netscape Navigator. The back-end database comprises a back-end (e.g., server-based) database system, such as an SQL-based database system. The run-time system includes a collection or repository module for storing “presentation templates,” a Template Services Module or engine, a Template Parameters Module, and a Database Accessor Module. The presentation templates are employed for presentation of the application to the user interface (at the client). At application run-time, the templates are provided to the Template Services Module, which includes a Template Manager and a Template Parser. These provide generic processing of the templates, which may be assembled to complete a finished product (i.e., run-time application). For instance, the Template Services Module knows how to load and parse a template and then look up its parameters, regardless of the application-specific details (e.g., user interface implementation) embodied by the template. In use, the system is deployed with presentation templates that represent the various client views of the target application, for the various platforms that the application is deployed to. In this manner, when new functionality needs to be added to the system, it may simply be added by expanding the run-time library portion of the system.

Techniques for managing hierarchical data include managing a link table in a relational database. The hierarchical data includes data about a hierarchy of nodes related by multiple links. The link table includes first information, second information and link information, for each link. First information indicates a first node in the hierarchical data. Second information indicates a second node that is associated with the first node by the link. Link information indicates values for link attributes of the link between the first node and the second node, and does not indicate a value for any attribute of the first node alone or any attribute of the second node alone. The techniques support directing a single SQL statement to a path database object, constructed based on the link table, in order to obtain paths that satisfy a search on link attributes.

The present invention provides an audio analysis intelligence tool that provides ad-hoc search capabilities using spoken words as an organized data form. The present invention provides an SQL like interface to process and search audio data and combine it with other traditional data forms.

A scalable access filter that is used together with others like it in a virtual private network to control access by users at clients in the network to information resources provided by servers in the network. Each access filter uses a local copy of an access control data base to determine whether an access request is made by a user. Each user belongs to one or more user groups and each information resource belongs to one or more information sets. Access is permitted or denied according to access policies which define access in terms of the user groups and information sets. The first access filter in the path performs the access check, encrypts and authenticates the request; the other access filters in the path do not repeat the access check. The interface used by applications to determine whether a user has access to an entity is now an SQL entity. The policy server assembles the information needed for the response to the query from various information sources, including source external to the policy server.

The present invention provides a method, system, and computer program product for adaptive database buffer memory management using dynamic Structured Query Language (SQL) statement cache statistics. The method comprises: using SQL statement cache statistics to infer page re-use. The method further comprises: determining a use ratio of an SQL statement; comparing the use ratio of the statement to a threshold value; if the use ratio is less than the threshold value, setting a reclaim page attribute of the statement indicating a low likelihood of page re-use of pages referenced by the statement; and, if the reclaim page attribute of the statement is set: setting a quick reclaim attribute of each page read from disk by the statement; and after each page is released by the statement, placing the page in a buffer pool free list, wherein a memory location of the page in a buffer pool memory is immediately available for re-use.

A database querying system to facilitate the retrieval of desired data from a database including information categories, the system including a plurality of object data items categorized in one information category and a plurality of object data items categorized in another information category. A processor assembly responsive to a user query is also provided and is structured to identify the desired data from the user query. A relationship category defined by relationships between the object data items of the information categories is further provided, the user query including a relationship identifier corresponding the relationship category so as to simplify syntax of the user query. Interpretation of relational-database query and data manipulation languages against non-relational schemas, including conceptual, semantic, object-relational, or object-oriented database schemas, by regarding the schemas as representing virtual relational databases with every class replaced by a virtual table comprised of all the attributes reachable from the class by a chain of relations. The interpretation allows concise and simple querying of non-relational and relational databases in a languages originally intended only for relational databases. The system further provides for wrapping of a relational database into a semantic conceptual schema so as to allow formulation of queries in SQL against the wrapping schema, reducing the size of SQL queries.

An optimization technique for SQL queries, a program storage device storing the optimization program, and an apparatus for optimizing a query is provided. A query is analyzed to determine whether it includes a predicate for matching nullable operands and, if so, it is transformed to return TRUE when all operands are NULLs. If the DBMS supports this new function, the predicate is marked. If not, the predicate is re-written into a CASE expression having two SELECT clauses. The query is then executed in the computer to efficiently retrieve data from the relational database.

A database structure of a sort defined by an access and query language that defines tables of variables having labels and field characteristics, such as ANSI structured query language (SQL), is modified by determining the structural differences between an existing schema and a new schema, independent of database contents. The differences are processed to generate commands that are then applied to evolve an existing database from the old schema or structure to the new one. This avoids the need to dump and restructure the contents of the old database for reload into an empty new database that has been prepared to meet the new schema.