Efficient assembly of complex objects
... The purpose of the assembly operator is t o efficiently translate a set of complex objects from their disk representations t o a quickly traversable memory representation. Complex object refers t o one or more objects or object fragments connected by inter-object references. Note t h a t we do not r ...
... The purpose of the assembly operator is t o efficiently translate a set of complex objects from their disk representations t o a quickly traversable memory representation. Complex object refers t o one or more objects or object fragments connected by inter-object references. Note t h a t we do not r ...
Proceedings of USITS ’03: 4th USENIX Symposium on Internet Technologies and Systems
... Second, the computational cost of read queries is typically much larger than that of update queries. A typical update query consists of updating a single record selected by an equality test on a customer name or a product identifier. In contrast, read queries may involve complex search criteria invo ...
... Second, the computational cost of read queries is typically much larger than that of update queries. A typical update query consists of updating a single record selected by an equality test on a customer name or a product identifier. In contrast, read queries may involve complex search criteria invo ...
IBM InfoSphere Guardium Tech Talk: Guardium 101 Information Management
... directed by the user's configuration settings to find new database instances. Also finds and classifies sensitive data inside databases, using an intelligent database crawler to search for customizable patterns. Once sensitive objects have been located, they are automatically tagged with meta-data c ...
... directed by the user's configuration settings to find new database instances. Also finds and classifies sensitive data inside databases, using an intelligent database crawler to search for customizable patterns. Once sensitive objects have been located, they are automatically tagged with meta-data c ...
Principles of the Concept-Oriented Data Model
... domain etc. In the concept-oriented data model space is associated with the model syntax (section 2.1) while objects are associated with the model semantics (section 2.2). The separation between these two sorts of things is not unique for the concept-oriented paradigm and essentially underlies all t ...
... domain etc. In the concept-oriented data model space is associated with the model syntax (section 2.1) while objects are associated with the model semantics (section 2.2). The separation between these two sorts of things is not unique for the concept-oriented paradigm and essentially underlies all t ...
an exploration of - SJSU Engineering
... In both models where XML is used, it is sometimes necessary to store the XML in some sort of repository or database that allows for more sophisticated storage and retrieval of the data especially if the XML is to be accessed by multiple users. Below is a description of storage options based on what ...
... In both models where XML is used, it is sometimes necessary to store the XML in some sort of repository or database that allows for more sophisticated storage and retrieval of the data especially if the XML is to be accessed by multiple users. Below is a description of storage options based on what ...
![006. General view of RAC components [DOC file]](http://s1.studyres.com/store/data/005391062_1-5703c25df87cb93a1ba29dd601384d01-300x300.png)
006. General view of RAC components [DOC file]
... attribute of the ASM disk group is the redundancy level. The redundancy level defines whether the database files created on the disk group will be mirrored and to what level they will be mirrored. The following values can be specified for the redundancy level attribute of an ASM disk group. ...
... attribute of the ASM disk group is the redundancy level. The redundancy level defines whether the database files created on the disk group will be mirrored and to what level they will be mirrored. The following values can be specified for the redundancy level attribute of an ASM disk group. ...
Two Phase Locking - Department of Computer Science
... Example of locks (cont…) The most common solution to this problem is to provide a lock on A. Before reading A, a transaction T must lock A, which prevents another transaction from accessing A until T is finished with A. Furthermore, the need for T to set a lock on A prevents T from accessing A if s ...
... Example of locks (cont…) The most common solution to this problem is to provide a lock on A. Before reading A, a transaction T must lock A, which prevents another transaction from accessing A until T is finished with A. Furthermore, the need for T to set a lock on A prevents T from accessing A if s ...
Introduction to LINQ - Ganesan Muthiah's Blog
... It works with other databases (I'm currently using it with Oracle) It properly seperates the structural model from the conceptual entity ...
... It works with other databases (I'm currently using it with Oracle) It properly seperates the structural model from the conceptual entity ...
Protect Sensitive Data Using Encryption in SQL Server 2005
... you can perform ad hoc encryption with data in memory as well as persisting encrypted data in a database. SQL Server implements a powerful encryption key hierarchy to protect the keys that it manages thereby offering the potential for maximum transparency to existing applications. In addition, SQL S ...
... you can perform ad hoc encryption with data in memory as well as persisting encrypted data in a database. SQL Server implements a powerful encryption key hierarchy to protect the keys that it manages thereby offering the potential for maximum transparency to existing applications. In addition, SQL S ...
Strategies and Techniques for Using Oracle7 Replication
... processing conflicts (in terms of system resources) between data entry activity and data analysis activity. An example may be an accounting system with a high transaction rate that also serves as a management reporting system. With replication, the data could be owned and maintained by the transacti ...
... processing conflicts (in terms of system resources) between data entry activity and data analysis activity. An example may be an accounting system with a high transaction rate that also serves as a management reporting system. With replication, the data could be owned and maintained by the transacti ...
scalable metadata and quick retrieval of audio
... lower-resolution one. Third, the description at a given resolution depends only on the resolution, and not on the history of scaling operations that led to it. Scaling entails loss of information: low resolution metadata contain less information than high resolution, and conversion from lower to hig ...
... lower-resolution one. Third, the description at a given resolution depends only on the resolution, and not on the history of scaling operations that led to it. Scaling entails loss of information: low resolution metadata contain less information than high resolution, and conversion from lower to hig ...
Best Practices IBMr Building a Recovery Strategy for an
... also scalable and flexible so that it meets future needs. You can see the impact of a poorly designed backup and recovery solution not only when you require a recovery, but also in the performance of the system as a whole. When you use data warehouses which provide input to strategic decision-making ...
... also scalable and flexible so that it meets future needs. You can see the impact of a poorly designed backup and recovery solution not only when you require a recovery, but also in the performance of the system as a whole. When you use data warehouses which provide input to strategic decision-making ...
Part 12 - SQL for Oracle System Tables
... All “truly” relational systems must have the system information stored in tables. These system tables are accessible in the same way as any other table. This means that a relational system will have: A table containing the list of tables that make up the data dictionary. In Oracle this table is name ...
... All “truly” relational systems must have the system information stored in tables. These system tables are accessible in the same way as any other table. This means that a relational system will have: A table containing the list of tables that make up the data dictionary. In Oracle this table is name ...
DBA-ch02-Oracle Architecture
... The Database Control Interface (continued) • Tabs (continued) – Administration • Provides a multitude of options for administration ...
... The Database Control Interface (continued) • Tabs (continued) – Administration • Provides a multitude of options for administration ...
True/False Questions
... types, fields, and structural relationships. Additionally, the DDL defines views of the database. Answer: True Page: 525 LOD: Easy 79. The data manipulation language (DML) is used by the DBMS to physically establish record types, fields, and structural relationships. Additionally, the DML defines vi ...
... types, fields, and structural relationships. Additionally, the DDL defines views of the database. Answer: True Page: 525 LOD: Easy 79. The data manipulation language (DML) is used by the DBMS to physically establish record types, fields, and structural relationships. Additionally, the DML defines vi ...
Data Warehouse
... z Extract data from existing operational and legacy data z Issues: Sources of data for the warehouse Data quality at the sources Merging different data sources Data Transformation How to propagate updates (on the sources) to the warehouse y Terabytes of data to be loaded ...
... z Extract data from existing operational and legacy data z Issues: Sources of data for the warehouse Data quality at the sources Merging different data sources Data Transformation How to propagate updates (on the sources) to the warehouse y Terabytes of data to be loaded ...
data warehousing and data mining
... reporting needs tradeoff with volume of data to be stored and detailed usage of data ...
... reporting needs tradeoff with volume of data to be stored and detailed usage of data ...
An Adequate Design for Large Data Warehouse
... schema(is this scheme or schema?). This indexing scheme can answer range queries many times faster than the well-known indexing schemes. ...
... schema(is this scheme or schema?). This indexing scheme can answer range queries many times faster than the well-known indexing schemes. ...
Document
... 1. each A entity is associated with a unique entity from B and C or 2. each pair of entities from (A, B) is associated with a unique C entity, and each pair (A, C) is associated with a unique B ...
... 1. each A entity is associated with a unique entity from B and C or 2. each pair of entities from (A, B) is associated with a unique C entity, and each pair (A, C) is associated with a unique B ...
CSR installation instructions
... temporary root (super-user) privileges. Not all users are allowed to use the sudo command. Please, make sure that the system administrator of your Linux machine has assigned the privileges to you so that you can type: sudo –s You will be prompted for your own user password. Typing it does not show a ...
... temporary root (super-user) privileges. Not all users are allowed to use the sudo command. Please, make sure that the system administrator of your Linux machine has assigned the privileges to you so that you can type: sudo –s You will be prompted for your own user password. Typing it does not show a ...
PDF - Microsoft Docs
... About the Code Examples The code examples in this guide are designed for illustration purposes only. Because they are written primarily to demonstrate ODBC principles, efficiency has sometimes been set aside in the interest of clarity. In addition, whole sections of code have sometimes been omitted ...
... About the Code Examples The code examples in this guide are designed for illustration purposes only. Because they are written primarily to demonstrate ODBC principles, efficiency has sometimes been set aside in the interest of clarity. In addition, whole sections of code have sometimes been omitted ...
ODBC: Open DataBase Connectivity
... connection to the database is performed • Pass these into the new() function: $db = new Win32::ODBC( $Dsn, ODBC::SQL_LOGIN_TIMEOUT => 10, ODBC::SQL_OPT_TRACEFILE => ‘c:\trace.log’, ODBC::SQL_OPT_TRACE => ODBC::SQL_OPT_TRACE_ON ); ...
... connection to the database is performed • Pass these into the new() function: $db = new Win32::ODBC( $Dsn, ODBC::SQL_LOGIN_TIMEOUT => 10, ODBC::SQL_OPT_TRACEFILE => ‘c:\trace.log’, ODBC::SQL_OPT_TRACE => ODBC::SQL_OPT_TRACE_ON ); ...
107-29: Improving Peformance: Accessing DB2 Data with SAS 9
... Order By State; This is the SQL generated for the proc print statement only. As mentioned earlier the proc sort would not be necessary in this case. There are various reasons for using each type of access. Let’s take a look at a few examples of each. WHEN WOULD YOU USE SAS/ACCESS TRANSLATION TO SQL? ...
... Order By State; This is the SQL generated for the proc print statement only. As mentioned earlier the proc sort would not be necessary in this case. There are various reasons for using each type of access. Let’s take a look at a few examples of each. WHEN WOULD YOU USE SAS/ACCESS TRANSLATION TO SQL? ...
Relational model
The relational model for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by Edgar F. Codd. In the relational model of a database, all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.The purpose of the relational model is to provide a declarative method for specifying data and queries: users directly state what information the database contains and what information they want from it, and let the database management system software take care of describing data structures for storing the data and retrieval procedures for answering queries.Most relational databases use the SQL data definition and query language; these systems implement what can be regarded as an engineering approximation to the relational model. A table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates. However, SQL databases deviate from the relational model in many details, and Codd fiercely argued against deviations that compromise the original principles.