Object Oriented Analysis and Design
... internally, messages to itself. This private protocol of the class, includes messages that normally should not be sent from other objects. Here only the class itself can use the methods. • The public protocol defines the stated behavior of the class as a citizen in a population and is important info ...
... internally, messages to itself. This private protocol of the class, includes messages that normally should not be sent from other objects. Here only the class itself can use the methods. • The public protocol defines the stated behavior of the class as a citizen in a population and is important info ...
Object Oriented Analysis and Design
... internally, messages to itself. This private protocol of the class, includes messages that normally should not be sent from other objects. Here only the class itself can use the methods. • The public protocol defines the stated behavior of the class as a citizen in a population and is important info ...
... internally, messages to itself. This private protocol of the class, includes messages that normally should not be sent from other objects. Here only the class itself can use the methods. • The public protocol defines the stated behavior of the class as a citizen in a population and is important info ...
Chapter 10
... Huge database system that stores and manages data required to analyze historical and current transactions Quick and efficient way to access large amounts of data Uses multidimensional databases ...
... Huge database system that stores and manages data required to analyze historical and current transactions Quick and efficient way to access large amounts of data Uses multidimensional databases ...
queryProcessing
... • Modify Pass 1 of external sort to eliminate unwanted fields. If B buffer pages are available, runs of about 2B pages can be produced, but tuples in runs are smaller than input tuples. (Size ratio depends on # and size of fields that are dropped.) • Modify merging passes to eliminate duplicates. Th ...
... • Modify Pass 1 of external sort to eliminate unwanted fields. If B buffer pages are available, runs of about 2B pages can be produced, but tuples in runs are smaller than input tuples. (Size ratio depends on # and size of fields that are dropped.) • Modify merging passes to eliminate duplicates. Th ...
Simple Databases
... • You cannot edit (delete, insert, or update) a view • Also an example of nested queries ...
... • You cannot edit (delete, insert, or update) a view • Also an example of nested queries ...
galcho.com
... Why are there two query languages? LINQ is programming language based multiple types of data as input can be extended to new input types uses LINQ to SQL for database programming ...
... Why are there two query languages? LINQ is programming language based multiple types of data as input can be extended to new input types uses LINQ to SQL for database programming ...
Views
... Every value in a database is accessed by specifying a combination of table name, column name, and value of the primary key of the row in which it is stored ...
... Every value in a database is accessed by specifying a combination of table name, column name, and value of the primary key of the row in which it is stored ...
Visual Basic Database - Manajemen Files Narotama
... The data control can perform the following tasks • Connect to a database. • Open a specified database table. • Create a virtual table based on a database query. • Pass database fields to other Visual Basic tools, for display or editing. Such tools are bound to the database, or data bound controls. ...
... The data control can perform the following tasks • Connect to a database. • Open a specified database table. • Create a virtual table based on a database query. • Pass database fields to other Visual Basic tools, for display or editing. Such tools are bound to the database, or data bound controls. ...
SQL Server Profiler
... View|Select Column, and add these two columns.) The results you see tell you how many bytes of data have been written and read from the SQL Server service since it was last restarted. Because of this, you don't want to read this figure immediately after starting the SQL Server service, but after sev ...
... View|Select Column, and add these two columns.) The results you see tell you how many bytes of data have been written and read from the SQL Server service since it was last restarted. Because of this, you don't want to read this figure immediately after starting the SQL Server service, but after sev ...
dbase
... ensures that transactions that impact multiple tables are fully processed as a single unit. ...
... ensures that transactions that impact multiple tables are fully processed as a single unit. ...
Database
... Description of the element in the application domain. .Security classification of the data element Organisation-specific security classification level or possible restrictions on use. This may contain technicallin~ to security systems. .Related data elements List of closely related data element name ...
... Description of the element in the application domain. .Security classification of the data element Organisation-specific security classification level or possible restrictions on use. This may contain technicallin~ to security systems. .Related data elements List of closely related data element name ...
Design, Implementation, and Management THIRD EDITION
... may be stored in New York and another in San Francisco. It improves response time and data availability. Data replication requires the DDBMS to maintain data consistency among the replicas. A fully replicated database stores multiple copies of each database fragment. A partially replicated database ...
... may be stored in New York and another in San Francisco. It improves response time and data availability. Data replication requires the DDBMS to maintain data consistency among the replicas. A fully replicated database stores multiple copies of each database fragment. A partially replicated database ...
DATA STREAMS AND DATABASES
... DATA STREAMS AND DATABASES CS121: Introduction to Relational Database Systems Fall 2016 – Lecture 26 ...
... DATA STREAMS AND DATABASES CS121: Introduction to Relational Database Systems Fall 2016 – Lecture 26 ...
Chapter 2 - Websupport1
... • Independent of both software and hardware – Does not depend on the DBMS software used to implement the model – Does not depend on the hardware used in the implementation of the model – Changes in either hardware or DBMS software have no effect on the database design at the conceptual ...
... • Independent of both software and hardware – Does not depend on the DBMS software used to implement the model – Does not depend on the hardware used in the implementation of the model – Changes in either hardware or DBMS software have no effect on the database design at the conceptual ...
original - Kansas State University
... All subelements that occur only once can become relation attributes For text-valued subelements, store the text as attribute value For complex subelements, can store the id of the subelement ...
... All subelements that occur only once can become relation attributes For text-valued subelements, store the text as attribute value For complex subelements, can store the id of the subelement ...
Chapter 1
... - A database is a collection of data organized to allow relatively easy access for retrievals, additions, and deletions - A relational database is a collection of tables of data, each of which has one special column that stores the primary keys of the table - Rows are sometimes called entities - Des ...
... - A database is a collection of data organized to allow relatively easy access for retrievals, additions, and deletions - A relational database is a collection of tables of data, each of which has one special column that stores the primary keys of the table - Rows are sometimes called entities - Des ...
Joins and subqueries
... A subquery can be defined as a SELECT query that returns a single value Subqueries are nested within a SELECT, INSERT, UPDATE, or DELETE statement Subqueries can be used to retrieve data from multiple tables and can be used as an alternative to a join Subqueries can also be used inside the WHERE ...
... A subquery can be defined as a SELECT query that returns a single value Subqueries are nested within a SELECT, INSERT, UPDATE, or DELETE statement Subqueries can be used to retrieve data from multiple tables and can be used as an alternative to a join Subqueries can also be used inside the WHERE ...
ppt - Purdue University :: Computer Science
... (Also called entity-based or object-based data models.) ...
... (Also called entity-based or object-based data models.) ...
ppt - Purdue University :: Computer Science
... (Also called entity-based or object-based data models.) ...
... (Also called entity-based or object-based data models.) ...
Modeling Data for Business Processes
... Once business entities are modeled, associations of business entities and the database can be defined as “data mappings”. With such mappings between business entities and the database, the process designer only needs to focus on business entities in process modeling/design, while ignoring the databa ...
... Once business entities are modeled, associations of business entities and the database can be defined as “data mappings”. With such mappings between business entities and the database, the process designer only needs to focus on business entities in process modeling/design, while ignoring the databa ...
Intro to laboratory work: SQL Data Manipulation 1
... MS SQL SERVER 2008 ** new MS SQL SERVER 2008 STUDENT EDITION from MSDNAA installation guide – similar to 2005 edition All lecture notes are in version 2005 The 2008 interface is similar if not the same. ...
... MS SQL SERVER 2008 ** new MS SQL SERVER 2008 STUDENT EDITION from MSDNAA installation guide – similar to 2005 edition All lecture notes are in version 2005 The 2008 interface is similar if not the same. ...
ALTERNATE SCHEMA DIAGRAMMING METHODS DECISION
... This approach is called dimensional analysis Good example of denormalizing a schema to improve performance ...
... This approach is called dimensional analysis Good example of denormalizing a schema to improve performance ...
MicroStrategy,Terminology
... Changing the level of report aggregation on-‐the-‐fly, while the report results are being reviewed. Allows metric values to be aggregated at different levels depending on the attributes included on the repor ...
... Changing the level of report aggregation on-‐the-‐fly, while the report results are being reviewed. Allows metric values to be aggregated at different levels depending on the attributes included on the repor ...
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.