Xem 1-20 trên 143 kết quả Database searching
  • Almost all protein database search methods use amino acid substitution matrices for scoring, optimizing, and assessing the statistical significance of sequence alignments. Much care and effort has therefore gone into con-structing substitution matrices, and the quality of search results can depend strongly upon the choice of the proper matrix. A long-standing problem has been the comparison of sequences with biased amino acid composi-tions, for which standard substitution matrices are not optimal....

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  • Appendix 5a - Bibliographic database searches, Appendix 5b - Advanced searches. This chapter explains the use of secondary data sources to develop and formulate research questions.

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  • Businesses today want actionable insights into their data—they want their data to reveal itself to them in a natural and user–friendly form. What could be more natural than human language? Natural–language search is at the center of a storm of ever–increasing web–driven demand for human–computer communication and information access. SQL Server 2008 provides the tools to take advantage of the features of its built–in enterprise–level natural–language search engine in the form of integrated full–text search (iFTS).

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  • Many books in the documentation set use the sample schemas of the seed database, which is installed by default when you install Oracle. Refer to Oracle Database Sample Schemas for information on how these schemas were created and how you can use them yourself. Oracle error message documentation is only available in HTML. If you only have access to the Oracle Documentation CD, you can browse the error messages by range. Once you find the specific range, use your browser's "find in page" feature to locate the specific message.

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  • Databases and database systems are an essential component of life in modern society: most of us encounter several activities every day that involve some interaction with a database. For example, if we go to the bank to deposit or withdraw funds, if we make a hotel or airline reservation, if we access a computerized library catalog to search for a bibliographic item, or if we purchase something online—such as a book, toy, or computer— chances are that our activities will involve someone or some computer program accessing a database.

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  • At the other extreme, each disk controller now has tens of mega- bytes of storage and a very capable processor. It is quite feasible to have intelligent disks that offer either database access (SQL or some other non-procedural language) and even web service ac- cess. Moving from a block-oriented disk interface to a file inter- face, and then to a set or service interface has been the goal of database machine advocates...

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  • [ Team LiB ] Recipe 7.15 Adding Search Capabilities to Windows Forms Problem You need to use a search criteria specified by a user to locate a record displayed in a DataGrid without executing a query against the database. Solution Use the Find( )

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  • Tutorials Point, Simply Easy Learning MySQL Tutorial Tutorialspoint.com MySQL is the most popular Open Source Relational SQL database management system. MySQL is one of the best RDBMS being used for developing web based software applications. This tutorial gives an initial push to start you with MySQL. For more detail kindly check tutorialspoint.com/mysql What is Database? A database is a separate application that stores a collection of data. Each database has one or more distinct APIs for creating, accessing, managing, searching, and replicating the data it holds.

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  • One of several current trends in distributed database system de- sign is a move away from supporting traditional ACID database transactions. Some systems, such as Amazon’s Dynamo [13],Mon- goDB [24], CouchDB [6], and Cassandra [17] provide no transac- tional support whatsoever. Others provide only limited transaction- ality, such as single-row transactional updates (e.g. Bigtable [11]) or transactions whose accesses are limited to small subsets of a database (e.g. Azure [9], Megastore [7], and the Oracle NoSQL Database [26]).

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  • Keyword Search in Databases- P4:Conceptually, a database can be viewed as a data graph GD(V ,E), where V represents a set of objects, and E represents a set of connections between objects. In this book, we concentrate on two kinds of databases, a relational database (RDB) and an XML database. In an RDB, an object is a tuple that consists of many attribute values where some attribute values are strings or full-text; there is a connection between two objects if there exists at least one reference from one to the other....

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  • Keyword Search in Databases- P13:Conceptually, a database can be viewed as a data graph GD(V ,E), where V represents a set of objects, and E represents a set of connections between objects. In this book, we concentrate on two kinds of databases, a relational database (RDB) and an XML database. In an RDB, an object is a tuple that consists of many attribute values where some attribute values are strings or full-text; there is a connection between two objects if there exists at least one reference from one to the other....

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  • Keyword Search in Databases- P14:Conceptually, a database can be viewed as a data graph GD(V ,E), where V represents a set of objects, and E represents a set of connections between objects. In this book, we concentrate on two kinds of databases, a relational database (RDB) and an XML database. In an RDB, an object is a tuple that consists of many attribute values where some attribute values are strings or full-text; there is a connection between two objects if there exists at least one reference from one to the other....

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  • Keyword Search in Databases- P15:Conceptually, a database can be viewed as a data graph GD(V ,E), where V represents a set of objects, and E represents a set of connections between objects. In this book, we concentrate on two kinds of databases, a relational database (RDB) and an XML database. In an RDB, an object is a tuple that consists of many attribute values where some attribute values are strings or full-text; there is a connection between two objects if there exists at least one reference from one to the other....

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  • Keyword Search in Databases- P16:Conceptually, a database can be viewed as a data graph GD(V ,E), where V represents a set of objects, and E represents a set of connections between objects. In this book, we concentrate on two kinds of databases, a relational database (RDB) and an XML database. In an RDB, an object is a tuple that consists of many attribute values where some attribute values are strings or full-text; there is a connection between two objects if there exists at least one reference from one to the other....

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  • Keyword Search in Databases- P20:Conceptually, a database can be viewed as a data graph GD(V ,E), where V represents a set of objects, and E represents a set of connections between objects. In this book, we concentrate on two kinds of databases, a relational database (RDB) and an XML database. In an RDB, an object is a tuple that consists of many attribute values where some attribute values are strings or full-text; there is a connection between two objects if there exists at least one reference from one to the other....

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  • Keyword Search in Databases- P25:Conceptually, a database can be viewed as a data graph GD(V ,E), where V represents a set of objects, and E represents a set of connections between objects. In this book, we concentrate on two kinds of databases, a relational database (RDB) and an XML database. In an RDB, an object is a tuple that consists of many attribute values where some attribute values are strings or full-text; there is a connection between two objects if there exists at least one reference from one to the other....

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  • Once everything was in a database, the MyLifeBits project became a quest for useful tools to organize, associate metadata, access and report about the information. Figure 1 shows the many different capture and display tools used to populate the store and then to search or access it. In order to support legacy applications, NTFS files and Outlook email stores are monitored and their metadata integrated into the database, including the text of each item to enable full-text search.

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  • The search in patent databases is a risky business compared to the search in other domains. A single document that is relevant but overlooked during a patent search can turn into an expensive proposition. While recent research engages in specialized models and algorithms to improve the effectiveness of patent retrieval, we bring another aspect into focus: the detection and exploitation of patent inconsistencies. In particular, we analyze spelling errors in the assignee field of patents granted by the United States Patent & Trademark Office.

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  • Keyword Search in Databases- P1:Conceptually, a database can be viewed as a data graph GD(V ,E), where V represents a set of objects, and E represents a set of connections between objects. In this book, we concentrate on two kinds of databases, a relational database (RDB) and an XML database. In an RDB, an object is a tuple that consists of many attribute values where some attribute values are strings or full-text; there is a connection between two objects if there exists at least one reference from one to the other....

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  • Keyword Search in Databases- P2:Conceptually, a database can be viewed as a data graph GD(V ,E), where V represents a set of objects, and E represents a set of connections between objects. In this book, we concentrate on two kinds of databases, a relational database (RDB) and an XML database. In an RDB, an object is a tuple that consists of many attribute values where some attribute values are strings or full-text; there is a connection between two objects if there exists at least one reference from one to the other....

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