Abstract: A management device that manages a task that is executed by a plurality of users cooperatively includes an electronic data access unit, a management unit, and a past task storage unit. The electronic data access unit accesses electronic data. The management unit manages, for each task executed using the management device, task information in which pieces of authentication information of the users who have participated in the task are associated with access destination information indicating an access destination of the electronic data accessed by the electronic data access unit in the task. The past task storage unit stores therein the task information of a past task executed using the management device. The management unit generates the task information of a new task based on the task information of the past task that is stored in the past task storage unit.

Abstract: A management device manages information of a task having been executed by users cooperatively. An electronic data access unit accesses electronic data by using authentication information of a corresponding user. A management unit manages, for each task, task information in which pieces of authentication information of the users having participated in the task are associated with access destination information. A receiver receives a request, from a user, for access to the electronic data. When the electronic data access unit needs the authentication information of a user different from the requester user having participated in the task same as the task in which the requester user has participated to access the electric data as a target of the request, the electronic data access unit acquires the authentication information of the different user based on the task information and accesses the electronic data using the acquired authentication information of the different user.

Abstract: A diagnostic system includes circuitry configured to receive an input of life pattern data of a diagnosis-target person, estimate diagnosis data of the diagnosis-target person by applying correlation data, generated by correlating life pattern data and diagnosis data of persons already diagnosed of mental disorder, to the life pattern data of the diagnosis-target person, and control output of the estimated diagnosis data of the diagnosis-target person.

Abstract: A management device manages information of a task having been executed by users cooperatively. An electronic data access unit accesses electronic data by using authentication information of a corresponding user. A management unit manages, for each task, task information in which pieces of authentication information of the users having participated in the task are associated with access destination information. A receiver receives a request, from a user, for access to the electronic data. When the electronic data access unit needs the authentication information of a user different from the requester user having participated in the task same as the task in which the requester user has participated to access the electric data as a target of the request, the electronic data access unit acquires the authentication information of the different user based on the task information and accesses the electronic data using the acquired authentication information of the different user.

Abstract: A management device that manages a task that is executed by a plurality of users cooperatively includes an electronic data access unit, a management unit, and a past task storage unit. The electronic data access unit accesses electronic data. The management unit manages, for each task executed using the management device, task information in which pieces of authentication information of the users who have participated in the task are associated with access destination information indicating an access destination of the electronic data accessed by the electronic data access unit in the task. The past task storage unit stores therein the task information of a past task executed using the management device. The management unit generates the task information of a new task based on the task information of the past task that is stored in the past task storage unit.

Abstract: When a number of document data registered in one of full-text index-for-registration/deletion storage parts reaches a predetermined number, or when a capacity of the full-text index-for-registration/deletion storage part reaches a predetermined capacity, a merge processing is performed for merging data from the full-text index-for-registration/deletion storage part to a full-text index-for-search storage part. While this merge processing is performed, a registration/deletion processing is performed by using another full-text index-for-registration/deletion storage part.

Abstract: When a number of document data registered in one of full-text index-for-registration/deletion storage parts reaches a predetermined number, or when a capacity of the full-text index-for-registration/deletion storage part reaches a predetermined capacity, a merge processing is performed for merging data from the full-text index-for-registration/deletion storage part to a full-text index-for-search storage part. While this merge processing is performed, a registration/deletion processing is performed by using another full-text index-for-registration/deletion storage part.

Abstract: When a number of document data registered in one of full-text index-for-registration/deletion storage parts reaches a predetermined number, or when a capacity of the full-text index-for-registration/deletion storage part reaches a predetermined capacity, a merge processing is performed for merging data from the full-text index-for-registration/deletion storage part to a full-text index-for-search storage part. While this merge processing is performed, a registration/deletion processing is performed by using another full-text index-for-registration/deletion storage part.

Abstract: When a number of document data registered in one of full-text index-for-registration/deletion storage parts reaches a predetermined number, or when a capacity of the full-text index-for-registration/deletion storage part reaches a predetermined capacity, a merge processing is performed for merging data from the full-text index-for-registration/deletion storage part to a full-text index-for-search storage part. While this merge processing is performed, a registration/deletion processing is performed by using another full-text index-for-registration/deletion storage part.

Abstract: When a number of document data registered in one of full-text index-for-registration/deletion storage parts reaches a predetermined number, or when a capacity of the full-text index-for-registration/deletion storage part reaches a predetermined capacity, a merge processing is performed for merging data from the full-text index-for-registration/deletion storage part to a full-text index-for-search storage part. While this merge processing is performed, a registration/deletion processing is performed by using another full-text index-for-registration/deletion storage part.

Abstract: A database controlling system is provided to decrease a quantity of work of a system manager and save the capacity of a hard disc of a server by deleting, after backed up data is restored, an unnecessary external file added after commencement of the backup. The database controlling system includes an external file for storing data, such as long and massive data, not ordinarily operated, an external file controlling device for controlling the external file, and an external file list storage file for storing a list of the external files. Together with a file of a base page region storing the oldest version of a page, the external file and external file list storage file directly access and backup a file.

Abstract: There is provided a document retrieval apparatus in which signatures can be easily extracted from document data, and false drop probability is reduced even for a long document so as to reduce a burden of eliminating the false drop. A processing unit converts the document data and the character string into character codes, respectively. The processing unit extracts signatures from each of the character codes, and calculates a record identifier of the document data to be stored based on a storing position of the document data in a record file. A data storing unit stores the document data to be registered in the record file, and stores the signature corresponding to the document data to be registered in a signature file. The signature is stored in a storing position in the signature file, the storing position being designated by the record identifier of corresponding document data stored in the record file.