Optimizing select-project
... optimize general relational algebra expressions. In the remainder of these notes, however, we will see that there does exist an algorithm for optimizing expressions in a fragment of the relational algebra. This fragment consist of the so-called select-project-join expressions (to be formally defined ...
... optimize general relational algebra expressions. In the remainder of these notes, however, we will see that there does exist an algorithm for optimizing expressions in a fragment of the relational algebra. This fragment consist of the so-called select-project-join expressions (to be formally defined ...
job and person specification
... Health and Southern Child & Adolescent Mental Health Services, and works closely with other health providers in the southern area. Repatriation General Hospital, a public teaching hospital, formally joined Southern Health in July 2008, further consolidating the working relationship formed over the p ...
... Health and Southern Child & Adolescent Mental Health Services, and works closely with other health providers in the southern area. Repatriation General Hospital, a public teaching hospital, formally joined Southern Health in July 2008, further consolidating the working relationship formed over the p ...
Tuning Mondrian Performance
... When Mondrian initializes and starts to process the first queries, it makes SQL calls to get member lists and determine cardinality, and then to load segments into the cache. When Mondrian is closed and restarted, it has to do that work again. This can be a significant chunk of time depending on the ...
... When Mondrian initializes and starts to process the first queries, it makes SQL calls to get member lists and determine cardinality, and then to load segments into the cache. When Mondrian is closed and restarted, it has to do that work again. This can be a significant chunk of time depending on the ...
No Slide Title - Downloads
... – Entity Object (EO) • Provides a wrapper for database structures • Create an EO for each table, view, or stored procedure • EOs contain Attributes, corresponding to columns or procedure parameters ...
... – Entity Object (EO) • Provides a wrapper for database structures • Create an EO for each table, view, or stored procedure • EOs contain Attributes, corresponding to columns or procedure parameters ...
Curriculum Vitae
... implemented and delivered. My first major accomplishment for the company was to change the way ProCon stores files by implementing SQL Filestream. This involved making changes to incorporate the use of the SQL Filestream .Net API in the data access layer of the application. Also as part of this I im ...
... implemented and delivered. My first major accomplishment for the company was to change the way ProCon stores files by implementing SQL Filestream. This involved making changes to incorporate the use of the SQL Filestream .Net API in the data access layer of the application. Also as part of this I im ...
Introduction - University of Toronto
... Data Independence Advantage of using a DBMS: applications are (not totally) isolated from changes in the way data is structured and stored. Logical data independence: Protection from changes in logical structure of data (if the CS is changed, views can be redefined in terms of the new relations). ...
... Data Independence Advantage of using a DBMS: applications are (not totally) isolated from changes in the way data is structured and stored. Logical data independence: Protection from changes in logical structure of data (if the CS is changed, views can be redefined in terms of the new relations). ...
6-Database-Csharp
... The “data source” can be anything that has the required API, but usually it is a database server. ...
... The “data source” can be anything that has the required API, but usually it is a database server. ...
Database Management Systems (SQL/PL/SQL)
... example is how pages are ordered to form chapters. Administrative Meta data: It provides information to help manage a resource, such as when and how it was created, file type and other technical information, and who can access it. There are several subsets of data. Data Dictionary The data dictionar ...
... example is how pages are ordered to form chapters. Administrative Meta data: It provides information to help manage a resource, such as when and how it was created, file type and other technical information, and who can access it. There are several subsets of data. Data Dictionary The data dictionar ...
dbv - Marco Alamanni
... Protects all Database Vault meta-data All object owned by Database Vault schemas All objects owned by LBACSYS All Security Administration Roles ...
... Protects all Database Vault meta-data All object owned by Database Vault schemas All objects owned by LBACSYS All Security Administration Roles ...
1. High level Architecture
... 1.4.1 Net Framework with C#, ASP.NET, IIS MyCourses is implemented using .NET technologies therefore in order to make our application a part of MyCourses it would be easiest to implement the Peer Evaluation System.NET. Moreover, .NET provides a more simplistic and flexible programming model as suppo ...
... 1.4.1 Net Framework with C#, ASP.NET, IIS MyCourses is implemented using .NET technologies therefore in order to make our application a part of MyCourses it would be easiest to implement the Peer Evaluation System.NET. Moreover, .NET provides a more simplistic and flexible programming model as suppo ...
D O M A I N S P... Proceedings of DSL'99: The 2 Conference on Domain-Specific Languages
... the names of some labels. Another de ciency of the current implementation of TREX records is the fact that it is impossible to formulate a constraint on all the values in a given record, for instance, we would like to constrain a record to contain only values on which equality is de ned. Currently, ...
... the names of some labels. Another de ciency of the current implementation of TREX records is the fact that it is impossible to formulate a constraint on all the values in a given record, for instance, we would like to constrain a record to contain only values on which equality is de ned. Currently, ...
tivoli-talk - Purdue University
... • TSD (Tivoli Service Desk) supports the use of 6 database platforms. Each of these platforms require a different set of scripts to build the database • This project would generate platform specific scripts based on a single document ...
... • TSD (Tivoli Service Desk) supports the use of 6 database platforms. Each of these platforms require a different set of scripts to build the database • This project would generate platform specific scripts based on a single document ...
kjjhghgff - Folsom Lake College
... The Access window changes based on the object that is being used. Using the data stored in the table, you can use Access to create the following objects: queries, forms, and reports. A query asks a question about the data stored in the table. You use forms to enter data into a table, and a report to ...
... The Access window changes based on the object that is being used. Using the data stored in the table, you can use Access to create the following objects: queries, forms, and reports. A query asks a question about the data stored in the table. You use forms to enter data into a table, and a report to ...
Chapter 1: Introduction
... – Nonprocedural – user specifies what data is required without specifying how to get those data ...
... – Nonprocedural – user specifies what data is required without specifying how to get those data ...
Intro - Computer Science
... Declarative (non-procedural) – user specifies what data is required without specifying how to get those data ...
... Declarative (non-procedural) – user specifies what data is required without specifying how to get those data ...
Implementing Data Resource Management
... • A database is an integrated collection of logically related data elements. Five fundamental database structure:• Hierarchical – Treelike – One-to-many relationship – Used for structured, routine types of transaction processing ...
... • A database is an integrated collection of logically related data elements. Five fundamental database structure:• Hierarchical – Treelike – One-to-many relationship – Used for structured, routine types of transaction processing ...
original - Kansas State University
... Embedded SQL The SQL standard defines embeddings of SQL in a variety of programming languages such as C, Java, and Cobol. A language to which SQL queries are embedded is referred to as a host language, and the SQL structures permitted in the host language comprise embedded SQL. The basic form ...
... Embedded SQL The SQL standard defines embeddings of SQL in a variety of programming languages such as C, Java, and Cobol. A language to which SQL queries are embedded is referred to as a host language, and the SQL structures permitted in the host language comprise embedded SQL. The basic form ...
Java Database Connectivity (JDBC)
... related methods that make it possible to update table column values programmatically. This new API also adds methods to the Statement interface (and PreparedStatement and CallableStatement interfaces) so that update statements may be executed as a batch rather than singly. PreparedStatement The Prep ...
... related methods that make it possible to update table column values programmatically. This new API also adds methods to the Statement interface (and PreparedStatement and CallableStatement interfaces) so that update statements may be executed as a batch rather than singly. PreparedStatement The Prep ...
Database Concepts PowerPoint
... Facilitates effective & efficient data management Facilitates information retrieval with ad hoc queries Facilitates access to large, organized data Promotes integrated view of an organization’s operations Reduces chance of data inconsistency ...
... Facilitates effective & efficient data management Facilitates information retrieval with ad hoc queries Facilitates access to large, organized data Promotes integrated view of an organization’s operations Reduces chance of data inconsistency ...
Data Warehousing
... • Generating (synthesizing) information as well as using it, and storing this additional information by updating the data source • Modeling capabilities, including a calculation engine for deriving results and creating aggregations, consolidations and ...
... • Generating (synthesizing) information as well as using it, and storing this additional information by updating the data source • Modeling capabilities, including a calculation engine for deriving results and creating aggregations, consolidations and ...
SQL
... • To conditionally select data from a table, a WHERE clause can be added to the SELECT statement. • Syntax: – SELECT column – FROM table – WHERE column operator value • See next slide for various operators ...
... • To conditionally select data from a table, a WHERE clause can be added to the SELECT statement. • Syntax: – SELECT column – FROM table – WHERE column operator value • See next slide for various operators ...
Introduction to Database Systems by M Bozyigit
... DBMS ensures that execution of {T1, ... , Tn} is equivalent to some serial execution T1’ ... Tn’. Before reading/ writing an object, a transaction requests a lock on the object, and waits till the DBMS gives it the lock. All locks are released at the end of the transaction. (Needs a proper locki ...
... DBMS ensures that execution of {T1, ... , Tn} is equivalent to some serial execution T1’ ... Tn’. Before reading/ writing an object, a transaction requests a lock on the object, and waits till the DBMS gives it the lock. All locks are released at the end of the transaction. (Needs a proper locki ...
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.