Speeding up Database Applications with Pyxis
... When there is sufficient amount of CPU resources available on the database server in the beginning of the experiment, the Pyxis runtime chooses a partition that resembles the Manual implementation, where most of the application logic is executed on the database server. On the other hand, when only l ...
... When there is sufficient amount of CPU resources available on the database server in the beginning of the experiment, the Pyxis runtime chooses a partition that resembles the Manual implementation, where most of the application logic is executed on the database server. On the other hand, when only l ...
PowerPoint Chapter 10
... • Not all transactions update database • SQL code represents a transaction because database was accessed • Improper or incomplete transactions can have devastating effect on database integrity – Some DBMSs provide means by which user can define enforceable constraints – Other integrity rules are enf ...
... • Not all transactions update database • SQL code represents a transaction because database was accessed • Improper or incomplete transactions can have devastating effect on database integrity – Some DBMSs provide means by which user can define enforceable constraints – Other integrity rules are enf ...
Workhops_8_Jul_DB_development_tools_JW - Indico
... – set linesize xxx – number of characters per line – set pagesize xxx – number of rows per page – col column_name for ... – specified the way contents of the column are printed e.g: col name for a50; col salary for 9999.99 – set long xxx – number of characters printed for LOB columns ...
... – set linesize xxx – number of characters per line – set pagesize xxx – number of rows per page – col column_name for ... – specified the way contents of the column are printed e.g: col name for a50; col salary for 9999.99 – set long xxx – number of characters printed for LOB columns ...
Chapter_7_Building_Database
... accurate and acceptable information. For obvious reasons, data integrity is a desirable attribute for a database. To a small degree, a column's datatype establishes a more limited domain of acceptable values for the column it limits the type of data that the column can store. For example, a DATE col ...
... accurate and acceptable information. For obvious reasons, data integrity is a desirable attribute for a database. To a small degree, a column's datatype establishes a more limited domain of acceptable values for the column it limits the type of data that the column can store. For example, a DATE col ...
Portal Presentation - Melbourne SQL Server User Group
... PIVOT / UNPIVOT • Rotate rows into columns • Useful if you have a “soft” schema • For example, ProductAtrribute table ...
... PIVOT / UNPIVOT • Rotate rows into columns • Useful if you have a “soft” schema • For example, ProductAtrribute table ...
Slide 1
... be encrypted? And what are the levels of encryption to be used? – Backup retention policy: How long should backups be stored? When and how should data on tapes be removed? ...
... be encrypted? And what are the levels of encryption to be used? – Backup retention policy: How long should backups be stored? When and how should data on tapes be removed? ...
data warehouse?
... • A database and its DBMS is often referred to as a database system. • People who create and manage organizational database systems are referred to as database administrators. • How and why do knowledge workers use ...
... • A database and its DBMS is often referred to as a database system. • People who create and manage organizational database systems are referred to as database administrators. • How and why do knowledge workers use ...
The Curious Case of Database Deduplication
... What drives low deduplication ratios for databases ? 2014 Data Storage Innovation Conference. © Oracle Inc. All Rights Reserved. ...
... What drives low deduplication ratios for databases ? 2014 Data Storage Innovation Conference. © Oracle Inc. All Rights Reserved. ...
doc - itk.ilstu.edu
... Optimized performance: the power of applications developed for the federated system to achieve strong performance without the need to implement special strategies to evaluate the queries ...
... Optimized performance: the power of applications developed for the federated system to achieve strong performance without the need to implement special strategies to evaluate the queries ...
Using Oracle Spatial towards the effective handling of spatial data of
... using of the SDO_GEOMETRY data type. Due to the INSPIRE initiative there is a strong demand on the effective way of storing and retrieving of mentioned spatial cadastral data in a web environment. Mainly for the purpose of accessing cadastral data via WFS or WMS so called Publication database has be ...
... using of the SDO_GEOMETRY data type. Due to the INSPIRE initiative there is a strong demand on the effective way of storing and retrieving of mentioned spatial cadastral data in a web environment. Mainly for the purpose of accessing cadastral data via WFS or WMS so called Publication database has be ...
cutting values prediction with neural networks
... database (Experiment 1, Fig. 13). To get a better feeling about the quality of these parameters, additional cuts with a modified parameter environment were done. The setting limits are results for instance of optimization models (constraints) or from experince. In the example the prediction area for ...
... database (Experiment 1, Fig. 13). To get a better feeling about the quality of these parameters, additional cuts with a modified parameter environment were done. The setting limits are results for instance of optimization models (constraints) or from experince. In the example the prediction area for ...
Overview of Storage and Indexing
... data records, especially if search keys are small. (Portion of index structure used to direct search, which depends on size of data entries, is much ...
... data records, especially if search keys are small. (Portion of index structure used to direct search, which depends on size of data entries, is much ...
PhysDBStor - Microsoft Center
... administrators configure Microsoft SQL Server 2005 systems for optimal I/O performance and space utilization. This article also emphasizes the new SQL Server 2005 features that are significant to these discussions. This paper is separated into three sections. The first section focuses on the databas ...
... administrators configure Microsoft SQL Server 2005 systems for optimal I/O performance and space utilization. This article also emphasizes the new SQL Server 2005 features that are significant to these discussions. This paper is separated into three sections. The first section focuses on the databas ...
ppt
... Simple language consisting of path expressions Simple language designed for translation from XML to XML and XML to HTML ...
... Simple language consisting of path expressions Simple language designed for translation from XML to XML and XML to HTML ...
PPT of Chapter 2 - North South University
... key of another relation. The attribute is called a foreign key. E.g. customer_name and account_number attributes of depositor are foreign keys to customer and account respectively. Only values occurring in the primary key attribute of the referenced relation may occur in the foreign key attribut ...
... key of another relation. The attribute is called a foreign key. E.g. customer_name and account_number attributes of depositor are foreign keys to customer and account respectively. Only values occurring in the primary key attribute of the referenced relation may occur in the foreign key attribut ...
Comp 205: Comparative Programming Languages
... to find an instantiation of the variable that makes the predicate true. For example, the query "?-happy(X)", is a request to find someone that (according to the database) is happy. The result will be an instantiation of the variable X, for example, X = mary. ...
... to find an instantiation of the variable that makes the predicate true. For example, the query "?-happy(X)", is a request to find someone that (according to the database) is happy. The result will be an instantiation of the variable X, for example, X = mary. ...
Zero Downtime with GoldenGate
... Older software versions lacked functionality Ability to provide a robust and reliable service to its customers was at risk Priority 1 and 2 applications demanded little or no downtime ...
... Older software versions lacked functionality Ability to provide a robust and reliable service to its customers was at risk Priority 1 and 2 applications demanded little or no downtime ...
Federation of brain data through knowledge-guided mediation
... The data contained in the CCDB will be derived from both published and unpublished data. A constant concern in creating and maintaining databases of experimental information is the quality of data retrieved from a query. In the CCDB, the evaluation of the quality and accuracy of morphometric or prot ...
... The data contained in the CCDB will be derived from both published and unpublished data. A constant concern in creating and maintaining databases of experimental information is the quality of data retrieved from a query. In the CCDB, the evaluation of the quality and accuracy of morphometric or prot ...
Slide 1
... Contains data about data (metadata) Relies on specialized software component to manage a database of data definitions It contains information on.. The names and descriptions of all types of data records and their interrelationships Requirements for end users’ access and use of application pr ...
... Contains data about data (metadata) Relies on specialized software component to manage a database of data definitions It contains information on.. The names and descriptions of all types of data records and their interrelationships Requirements for end users’ access and use of application pr ...
Introduction to Databases
... Foreign keys hold a copy of a primary key in another table. Foreign keys hold a copy of a primary key in the same table. ...
... Foreign keys hold a copy of a primary key in another table. Foreign keys hold a copy of a primary key in the same table. ...
Chapter 5 PowerPoint Slides
... Identify data elements in each user view and put into a structure called a normal form Normalize user views Integrate set of entities from normalization into one description Normalization – process of creating simple data structures from more complex ones © 2005 Pearson Prentice-Hall ...
... Identify data elements in each user view and put into a structure called a normal form Normalize user views Integrate set of entities from normalization into one description Normalization – process of creating simple data structures from more complex ones © 2005 Pearson Prentice-Hall ...
PPT
... Identify data elements in each user view and put into a structure called a normal form Normalize user views Integrate set of entities from normalization into one description Normalization – process of creating simple data structures from more complex ones © 2005 Pearson Prentice-Hall ...
... Identify data elements in each user view and put into a structure called a normal form Normalize user views Integrate set of entities from normalization into one description Normalization – process of creating simple data structures from more complex ones © 2005 Pearson Prentice-Hall ...
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.