Chapter 13: File and Database Systems
... • From this point on, access to the file is directed through the file descriptor • To enable fast access to file-specific information such as permissions, the open-file table often contains file control blocks, also called file attributes: – Highly system-dependent structures that might include the ...
... • From this point on, access to the file is directed through the file descriptor • To enable fast access to file-specific information such as permissions, the open-file table often contains file control blocks, also called file attributes: – Highly system-dependent structures that might include the ...
RDF Resource Description Framework
... We already have ways of putting web data into a context which the computer can understand • Databases use tables • XML uses hierarchies However, these techniques can be too restrictive ...
... We already have ways of putting web data into a context which the computer can understand • Databases use tables • XML uses hierarchies However, these techniques can be too restrictive ...
Data Mining
... Extraction of interesting (non-trivial, implicit, previously unknown and potentially useful) patterns or knowledge from huge amount of data ...
... Extraction of interesting (non-trivial, implicit, previously unknown and potentially useful) patterns or knowledge from huge amount of data ...
9d290f4ade80b83
... and Capabilities – Models are generally utilized to analyze decisionmaking situations – Access is provided to a variety of data sources, formats, and types – Can be employed as a standalone tool used by an individual decision maker in one location or distributed throughout an organization and in sev ...
... and Capabilities – Models are generally utilized to analyze decisionmaking situations – Access is provided to a variety of data sources, formats, and types – Can be employed as a standalone tool used by an individual decision maker in one location or distributed throughout an organization and in sev ...
Relational Data Tailoring Through View Composition
... to introduce the notion of context in the data being modeled, by means of additional attributes explicitly defining the context (e.g., space and time characteristics) the data belongs to. In [15] the authors present a Context Relational Model as an extension of the relational one: the notion of cont ...
... to introduce the notion of context in the data being modeled, by means of additional attributes explicitly defining the context (e.g., space and time characteristics) the data belongs to. In [15] the authors present a Context Relational Model as an extension of the relational one: the notion of cont ...
Log Reader Agent Algorithm
... • Useful for manually generating an update proc that is optimized for tables with large numbers of indexes – Exec Sp_scriptdynupdproc ...
... • Useful for manually generating an update proc that is optimized for tables with large numbers of indexes – Exec Sp_scriptdynupdproc ...
Upgrade Oracle Database from 9.2.0.6 to 10g
... ii) Recreate grants and synonym for apps a. Log in to server with applmgr user b. Execute adadmin c. Choose -> Maintain Applications Database Entities menu d. Choose -> Re-create grants and synonyms for APPS schema d) On the application tier run the below command to generate ...
... ii) Recreate grants and synonym for apps a. Log in to server with applmgr user b. Execute adadmin c. Choose -> Maintain Applications Database Entities menu d. Choose -> Re-create grants and synonyms for APPS schema d) On the application tier run the below command to generate ...
Document
... – Upgrades now take less than 5 person-minutes per Database – Your site might not require automated Upgrades, but • Pieces of it may be useful • Might spawn ideas for your future automation • Information sharing on Automation (other than Upgrades) will be discussed ...
... – Upgrades now take less than 5 person-minutes per Database – Your site might not require automated Upgrades, but • Pieces of it may be useful • Might spawn ideas for your future automation • Information sharing on Automation (other than Upgrades) will be discussed ...
comlab.ox.ac.uk - Department of Computer Science, Oxford
... somewhere in between, where some processing is done extensionally, while some intensional evaluation needs to be performed on the offending tuples. We show both analytically and experimentally that our approach combines indeed the best of the two worlds, and obtains orders of magnitude performance i ...
... somewhere in between, where some processing is done extensionally, while some intensional evaluation needs to be performed on the offending tuples. We show both analytically and experimentally that our approach combines indeed the best of the two worlds, and obtains orders of magnitude performance i ...
Nessun titolo diapositiva
... • integrity constraint: a property that must be satisfied by all meaningful database instances; • it can be seen as a predicate: a database instance is legal if it satisfies all integrity constraints • types of constraints – intrarelational constraints; special cases: • domain constraints • tuple co ...
... • integrity constraint: a property that must be satisfied by all meaningful database instances; • it can be seen as a predicate: a database instance is legal if it satisfies all integrity constraints • types of constraints – intrarelational constraints; special cases: • domain constraints • tuple co ...
A FAD for data intensive applications - Knowledge and Data
... data model (121. This problem is seen in the interface between embedded SQL products and their host languages. Another approach is to add persistence and database oriented data types to the data model of an existing general purpose language. While addressing the impedance mismatch problem, such an a ...
... data model (121. This problem is seen in the interface between embedded SQL products and their host languages. Another approach is to add persistence and database oriented data types to the data model of an existing general purpose language. While addressing the impedance mismatch problem, such an a ...
Weak Entity Sets
... Translating all constraints may not be possible There may be instances in the translated schema that cannot correspond to any instance of R Exercise: add constraints to the relationships RA, RB and RC to ensure ...
... Translating all constraints may not be possible There may be instances in the translated schema that cannot correspond to any instance of R Exercise: add constraints to the relationships RA, RB and RC to ensure ...
Conceptual Data Models for Database Design
... Conceptual schema: concise description of data requirements of the users, and includes a detailed description of the entity types, relationships and constraints. The concepts do not include implementation details; therefore the end users easily understand them, and they can be used as a communic ...
... Conceptual schema: concise description of data requirements of the users, and includes a detailed description of the entity types, relationships and constraints. The concepts do not include implementation details; therefore the end users easily understand them, and they can be used as a communic ...
Best ���® Transforming
... IBM Industry Models cover a range of industries which include banking, healthcare, retail, and telecommunications. The example that is chosen in this document is from a subset of the IBM Insurance Information Warehouse model pertaining to Solvency II (SII) ...
... IBM Industry Models cover a range of industries which include banking, healthcare, retail, and telecommunications. The example that is chosen in this document is from a subset of the IBM Insurance Information Warehouse model pertaining to Solvency II (SII) ...
Tractable reasoning in first-order knowledge bases with disjunctive
... The main result of this paper is inspired by the tractability of database query evaluation for first-order formulas with a bounded number of variables. In this section, we briefly review this result, and discuss its significance. The complexity of query evaluation has been one of the main pursuits o ...
... The main result of this paper is inspired by the tractability of database query evaluation for first-order formulas with a bounded number of variables. In this section, we briefly review this result, and discuss its significance. The complexity of query evaluation has been one of the main pursuits o ...
Oracle Database. In-Memory Aggregation
... In-Memory Aggregation (IMA) is designed to provide improved query performance while utilizing fewer CPU resources. In-Memory Aggregation provides fast query performance with fully dynamic aggregation of data without the need for indexes, summary tables or materialized views. In-Memory Aggregation ty ...
... In-Memory Aggregation (IMA) is designed to provide improved query performance while utilizing fewer CPU resources. In-Memory Aggregation provides fast query performance with fully dynamic aggregation of data without the need for indexes, summary tables or materialized views. In-Memory Aggregation ty ...
A Distributed Query Execution Method for RDF Storage Managers
... Since operation copy is implemented by using a stream of triples, the query parts that form a complete query tree can be executed in parallel. While the data server is processing the query sub-tree that computes the next triple to be consumed by a given data server, it can also process previously re ...
... Since operation copy is implemented by using a stream of triples, the query parts that form a complete query tree can be executed in parallel. While the data server is processing the query sub-tree that computes the next triple to be consumed by a given data server, it can also process previously re ...
Merging What`s Cracked, Cracking What`s Merged
... Our hybrid algorithms follow the same general strategy as our implementation of adaptive merging while trying to mimic crackinglike physical reorganization steps that result in crack columns in the sideways cracking form. The first query of each column splits the column’s data into initial partition ...
... Our hybrid algorithms follow the same general strategy as our implementation of adaptive merging while trying to mimic crackinglike physical reorganization steps that result in crack columns in the sideways cracking form. The first query of each column splits the column’s data into initial partition ...
OWASP_Backend_Security_Project_1.0beta
... It is well known that one of the most dangerous classes of attack is the SQL Injection since it takes advantage of backend application weaknesses. In the following paragraphs and code examples, we will try to provide some basic knowledge to understand how to protect backend applications from SQL Inj ...
... It is well known that one of the most dangerous classes of attack is the SQL Injection since it takes advantage of backend application weaknesses. In the following paragraphs and code examples, we will try to provide some basic knowledge to understand how to protect backend applications from SQL Inj ...
n IBM Tivoli Network Manager with DB2 Best Practices v1.1
... and Informix databases. We will focus on DB2 (9.7,10.1,10.5) specifics in this article, although most of the information referring to the use of databases with Network Manager applies to all databases. This document is intended to help you tune and maintain the DB2 database. In many cases the defaul ...
... and Informix databases. We will focus on DB2 (9.7,10.1,10.5) specifics in this article, although most of the information referring to the use of databases with Network Manager applies to all databases. This document is intended to help you tune and maintain the DB2 database. In many cases the defaul ...
XML SUPPORT IN IBM DB2, SQL SERVER, ORACLE
... documents. XML databases have become widely accepted for all applications where the storage of XML data is necessary. There are three different types of XML databases [5], namely: XML Enabled Database: A database that holds data in some format different than XML. An interface is provided, which pr ...
... documents. XML databases have become widely accepted for all applications where the storage of XML data is necessary. There are three different types of XML databases [5], namely: XML Enabled Database: A database that holds data in some format different than XML. An interface is provided, which pr ...
Autonomous and Distributed Transactions in Oracle 8i/9i Nandeep
... In PL/SQL, transaction processing takes place serially. That is, a new transaction can begin only when the earlier transaction ends, in which case the user issues an explicit Commit or Rollback statement. Quite often, however, your application may require you to commit or rollback changes without af ...
... In PL/SQL, transaction processing takes place serially. That is, a new transaction can begin only when the earlier transaction ends, in which case the user issues an explicit Commit or Rollback statement. Quite often, however, your application may require you to commit or rollback changes without af ...