Ontology Based Query Answering: The Story So Far
... In the absence of an ontology, OBQA coincides with standard query evaluation over plain (graph) databases, but in general, the presence of the ontology makes query answering more involved. As we have seen, to answer a query one may need to take into account instances of concepts and roles not given ...
... In the absence of an ontology, OBQA coincides with standard query evaluation over plain (graph) databases, but in general, the presence of the ontology makes query answering more involved. As we have seen, to answer a query one may need to take into account instances of concepts and roles not given ...
Sample Chapter 5 (PDF, 60 Pages
... such as Student Number and Student Name. Columns are also called fields. Columns or fields, in turn, are grouped into rows, which are also called records. In Figure 5-3, the collection of data for all columns (Student Number, Student Name, HW1, HW2, and MidTerm) is called a row or a record. Finally, ...
... such as Student Number and Student Name. Columns are also called fields. Columns or fields, in turn, are grouped into rows, which are also called records. In Figure 5-3, the collection of data for all columns (Student Number, Student Name, HW1, HW2, and MidTerm) is called a row or a record. Finally, ...
The State of the Art in Distributed Query Processing
... reasons, and they often must do it in order to stay competitive. While much of the infrastructure for distributed data processing is already there (e.g., modern network technology), a number of issues make distributed data processing still a complex undertaking: (1) distributed systems can become ve ...
... reasons, and they often must do it in order to stay competitive. While much of the infrastructure for distributed data processing is already there (e.g., modern network technology), a number of issues make distributed data processing still a complex undertaking: (1) distributed systems can become ve ...
Guide to Using SQL: Sequence Number Generator
... (d) The previous solutions can be enhanced so that each concurrent updater is allocated a range of values, or possibly use multiple rows in SEQ_TABLE to spread the contention. In each case we have now moved the complexity into the application that must now manage these value ranges, special tables, ...
... (d) The previous solutions can be enhanced so that each concurrent updater is allocated a range of values, or possibly use multiple rows in SEQ_TABLE to spread the contention. In each case we have now moved the complexity into the application that must now manage these value ranges, special tables, ...
ResultSet
... For most queries, the asterisk (*) should not be used to specify column names. In general, you process results by knowing in advance the order of the columns in the result—for example, selecting authorID and lastName from table authors ensures that the columns will appear in the result with authorID ...
... For most queries, the asterisk (*) should not be used to specify column names. In general, you process results by knowing in advance the order of the columns in the result—for example, selecting authorID and lastName from table authors ensures that the columns will appear in the result with authorID ...
Multiple Choice Tutorial
... A user is anyone who needs to access some portion of the data. They may range from application programmers to casual users with adhoc queries. Each user has a language at ...
... A user is anyone who needs to access some portion of the data. They may range from application programmers to casual users with adhoc queries. Each user has a language at ...
Keyword-based Search in a Relational Database
... the data desired. When one wants to search the available data stored in the relational database, these requirements can be discouraging. In this case keyword-based search functionality could improve the accessibility of the data. In this thesis I investigate the subject of keyword-based search in st ...
... the data desired. When one wants to search the available data stored in the relational database, these requirements can be discouraging. In this case keyword-based search functionality could improve the accessibility of the data. In this thesis I investigate the subject of keyword-based search in st ...
CS342-Phase-5 Jennifer Montenegro Kevin Lee
... It also provides an illustrated picture of what the database format may look like. The E-R model also has specialization and generalization to specify super classes and subclasses. Everything in a relational model is a mathematical relation concerning domains. The relational model shows similar info ...
... It also provides an illustrated picture of what the database format may look like. The E-R model also has specialization and generalization to specify super classes and subclasses. Everything in a relational model is a mathematical relation concerning domains. The relational model shows similar info ...
1 - Fordham University
... For most queries, the asterisk (*) should not be used to specify column names. In general, you process results by knowing in advance the order of the columns in the result—for example, selecting authorID and lastName from table authors ensures that the columns will appear in the result with authorID ...
... For most queries, the asterisk (*) should not be used to specify column names. In general, you process results by knowing in advance the order of the columns in the result—for example, selecting authorID and lastName from table authors ensures that the columns will appear in the result with authorID ...
Best practices ® Query optimization in a data warehouse
... architecture to scale out. If possible, collocate joined data on the same partition. Otherwise, a large amount of data might have to be sent across the network, and that might slow down the query and limit scalability. This property is true for virtually any database system that uses a shared-nothin ...
... architecture to scale out. If possible, collocate joined data on the same partition. Otherwise, a large amount of data might have to be sent across the network, and that might slow down the query and limit scalability. This property is true for virtually any database system that uses a shared-nothin ...
Final Presentation - San Jose State University
... These are byte strings that let us determine the place within the secondary storage system where the block or record can be found. Bytes of physical address used to indicate following information: The host to which the storage is attached. An identifier for the disk or other device on which th ...
... These are byte strings that let us determine the place within the secondary storage system where the block or record can be found. Bytes of physical address used to indicate following information: The host to which the storage is attached. An identifier for the disk or other device on which th ...
CIS 690 Project Report
... The OracleMembershipProvider uses the 3 tables: Provider_Applications, Provider_Membership, and Provider_Users. The Provider model has been designed in a way to accommodate multiple portals in a single database. The Provider_Applications table is used for storing the details of individual portal lik ...
... The OracleMembershipProvider uses the 3 tables: Provider_Applications, Provider_Membership, and Provider_Users. The Provider model has been designed in a way to accommodate multiple portals in a single database. The Provider_Applications table is used for storing the details of individual portal lik ...
BetaTeam Progress Report (I1)
... It is possible to test the database. The architecture is ready and will support different end users. Interface to the current system function “read” works. Interface to the current system function “write” works. Update the database Information. Interface to the current system function “delete” works ...
... It is possible to test the database. The architecture is ready and will support different end users. Interface to the current system function “read” works. Interface to the current system function “write” works. Update the database Information. Interface to the current system function “delete” works ...
Managing Expressions as Data in Relational Database
... NUMBER can be customized for length and precision (respectively) at the time of column creation, the different kinds of customizations possible with these types are fixed and limited and hence cannot be extended to handle expressions. To address these requirements, we adopted the following approach. ...
... NUMBER can be customized for length and precision (respectively) at the time of column creation, the different kinds of customizations possible with these types are fixed and limited and hence cannot be extended to handle expressions. To address these requirements, we adopted the following approach. ...
