IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0095569
(2002-03-13)
|
우선권정보 |
JP-0041855 (1997-02-26) |
발명자
/ 주소 |
- Takahashi, Toru
- Kawaguchi, Hisamitsu
- Yamasaki, Noriyuki
|
출원인 / 주소 |
|
대리인 / 주소 |
Mattingly, Stanger & Malur, P.C.
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인용정보 |
피인용 횟수 :
4 인용 특허 :
12 |
초록
▼
A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a sin
A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifiers of pieces of meta-character-string data in the structure index used for representing the pieces of character-string data; and a character-string-index updating step, including the sub-steps of extracting partial character strings, generating structured-character-position information, and updating a character-string index.
대표청구항
▼
A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a sin
A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifiers of pieces of meta-character-string data in the structure index used for representing the pieces of character-string data; and a character-string-index updating step, including the sub-steps of extracting partial character strings, generating structured-character-position information, and updating a character-string index. orcing the rule defined in the rule set comprises the steps of: transmitting a prepare acknowledgement message from the metadata service, receiving a commit message in the metadata service, and transmitting a commit acknowledgement message from the metadata service when the rule allows the metadata modification; and transmitting an abort message from the metadata service and receiving an abort message in the metadata service when the rule does not allow the metadata modification. 14. An apparatus for managing metadata in a database management system, comprising: means for receiving a command from a system component in a metadata service, wherein execution of the command implicates a metadata modification; means for parsing the command to determine if the command requires a metadata modification; means for accessing a rule set defining rules for modifying the metadata when the command requires a metadata modification, wherein the rule set includes a rule requiring negotiation of the metadata modification between the system component and a second system component accessing the database management system; and means for enforcing the rule defined in the rule set. 15. The apparatus of claim 14, wherein the metadata modification is categorized into a metadata modification type and the rule comprises the metadata modification type. 16. The apparatus of claim 14, wherein the rule set comprises predicate rules which are enforced before the metadata change is prepared and subsequent rules which are enforced after the metadata change is committed. 17. The apparatus of claim 14, wherein the rule set comprises a notify rule to notify a second system component of the metadata modification and to allow the metadata modification if the second system component approves. 18. The apparatus of claim 14, wherein the rule set comprises an alert rule to alert a second system component of the metadata modification. 19. The apparatus of claim 14, wherein the rule set comprises a block rule to bock the metadata modification. 20. The apparatus of claim 14, further comprising: means for accepting a suspend request associated with a rule in the metadata service; means for suspending the rule specified by the suspend request; and means for notifying a second system component of the suspended rule. 21. The apparatus of claim 14, further comprising means for transmitting an outcome of the command from the database management system. 22. The apparatus of claim 14, wherein the database command affects the database management system schema. 23. The apparatus of claim 14, wherein the command is transmitted to the metadata service via a replication service. 24. The apparatus of claim 14, wherein the command is described by a database definition language. 25. The apparatus of claim 14, wherein the rule set is stored as a table in the database management system. 26. The apparatus of claim 14, wherein the command transmitted to the metadata services is a prepare command transmitted via a request coordinator in the relational database management system, and the step of enforcing the rule defined in the rule set comprises the steps of: transmitting a prepare acknowledgement message from the metadata service, receiving a commit message in the metadata service, and transmitting a commit acknowledgement message from the metadata service when the rule Allows the metadata modification; and transmitting an abort message from the metadata service and receiving an abort message in the metadata service when the rule does not allow the metadata modification. 27. A program storage device, readable by computer having a processor and a memory, tangibly embodying one or more programs of instructions executable by the computer to perform the method steps of managing metadata in a database management system, the method steps comprising the steps of: accepting a command in the database management system from a system component, wherein execution of the co
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