from instructor - Computer Science
... SQL allows a subquery expression to be used in the from clause Find the average instructors’ salaries of those departments where the average salary is greater than $42,000.” select dept_name, avg_salary from (select dept_name, avg (salary) as avg_salary from instructor group by dept_name) where avg_ ...
... SQL allows a subquery expression to be used in the from clause Find the average instructors’ salaries of those departments where the average salary is greater than $42,000.” select dept_name, avg_salary from (select dept_name, avg (salary) as avg_salary from instructor group by dept_name) where avg_ ...
Chapter 2: Entity-Relationship Model
... A bottom-up design process – combine a number of entity sets ...
... A bottom-up design process – combine a number of entity sets ...
No Slide Title
... In general, any non-binary relationship can be represented using binary relationships by creating an artificial entity set. Replace R between entity sets A, B and C by an entity set E, and three relationship sets: 1. RA, relating E and A 2.RB, relating E and B 3. RC, relating E and C Create a sp ...
... In general, any non-binary relationship can be represented using binary relationships by creating an artificial entity set. Replace R between entity sets A, B and C by an entity set E, and three relationship sets: 1. RA, relating E and A 2.RB, relating E and B 3. RC, relating E and C Create a sp ...
Chapter 2: Relational Model
... Each attribute of a relation has a name The set of allowed values for each attribute is called the domain of the ...
... Each attribute of a relation has a name The set of allowed values for each attribute is called the domain of the ...
Oracle Database Readme
... To avoid potential space problems during the upgrade, you can set one data file for each tablespace to AUTOEXTEND ON MAXSIZE UNLIMITED for the duration of the upgrade. The Pre-Upgrade Information Utility does not currently estimate UNDO tablespace utilitization during the upgrade. The total amount o ...
... To avoid potential space problems during the upgrade, you can set one data file for each tablespace to AUTOEXTEND ON MAXSIZE UNLIMITED for the duration of the upgrade. The Pre-Upgrade Information Utility does not currently estimate UNDO tablespace utilitization during the upgrade. The total amount o ...
Paper on ODBC
... Another big problem is the future of ODBC is uncertain. Microsoft has shown commitment to OLE/DB. OLE/DB introduces a different programming standard as it leans more to object-based rather than procedural. But Microsoft is promising continuing support to ODBC as well as OLE/DB so this issue will ha ...
... Another big problem is the future of ODBC is uncertain. Microsoft has shown commitment to OLE/DB. OLE/DB introduces a different programming standard as it leans more to object-based rather than procedural. But Microsoft is promising continuing support to ODBC as well as OLE/DB so this issue will ha ...
Databases - JB on programming
... 1.1.10 See also . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... 1.1.10 See also . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
slides - cse.sc.edu
... Overt Channel: designed into a system and documented in the user's manual Covert Channel: not documented. Covert channels may be deliberately inserted into a system, but most such channels are accidents of the system design. ...
... Overt Channel: designed into a system and documented in the user's manual Covert Channel: not documented. Covert channels may be deliberately inserted into a system, but most such channels are accidents of the system design. ...
Sample
... database. A Microsoft Access database named Cape-Codd.accdb is available on our Web site (www.pearsonhighered.com/kroenke ) that contains all the tables and data for the Cape Codd Outdoor Sports sales data extract database. Also available on our Web site are SQL scripts for creating and populating t ...
... database. A Microsoft Access database named Cape-Codd.accdb is available on our Web site (www.pearsonhighered.com/kroenke ) that contains all the tables and data for the Cape Codd Outdoor Sports sales data extract database. Also available on our Web site are SQL scripts for creating and populating t ...
ER Model 2 - Department of Computer Science
... the higher-level entity set must belong to at least one of the lower-level entity sets within a generalization. total : an entity must belong to one of the lower-level entity sets partial: an entity need not belong to one of the lower-level entity sets ...
... the higher-level entity set must belong to at least one of the lower-level entity sets within a generalization. total : an entity must belong to one of the lower-level entity sets partial: an entity need not belong to one of the lower-level entity sets ...
How to Save Money, Reduce Risk, and Database Systems
... many customers, they might not be the optimal solution for all sites and all business needs. Engineered systems are purchased and shipped as specific configurations, so they aren’t the best fit for organizations that might not require or be in a position to benefit from the Oracle Exadata Storage Se ...
... many customers, they might not be the optimal solution for all sites and all business needs. Engineered systems are purchased and shipped as specific configurations, so they aren’t the best fit for organizations that might not require or be in a position to benefit from the Oracle Exadata Storage Se ...
Fortis Product Overview - Triangle Solutions Technology, LLC.
... offered by client/server technology and Microsoft’s Open Database Connectivity (ODBC) architecture. Fortis operates as a true client/server system with the database engine installed on a dedicated database server, the client software installed on a shared network server, and client workstations conf ...
... offered by client/server technology and Microsoft’s Open Database Connectivity (ODBC) architecture. Fortis operates as a true client/server system with the database engine installed on a dedicated database server, the client software installed on a shared network server, and client workstations conf ...
ppt
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
ppt - FCN
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
Oracle Database Licensing Information
... This document, which is part of the Program Documentation under the terms of your Oracle licensing agreement, is intended to help you understand the features, functionality, and options available for Oracle Programs and the licenses required to use them. Oracle offers a variety of licensing options ...
... This document, which is part of the Program Documentation under the terms of your Oracle licensing agreement, is intended to help you understand the features, functionality, and options available for Oracle Programs and the licenses required to use them. Oracle offers a variety of licensing options ...
TerraAmazon Administrator User´s Manual
... model database. It engages land use and land cover classification tools as well as spatial operations between vector data, allowing transitions analysis among other applications. TerraAmazon keeps work time records for project control. It´s functionalities are extensible through plugins, such as the ...
... model database. It engages land use and land cover classification tools as well as spatial operations between vector data, allowing transitions analysis among other applications. TerraAmazon keeps work time records for project control. It´s functionalities are extensible through plugins, such as the ...
Chapter 7: Relational Database Design
... Combine Schemas? Suppose we combine borrow and loan to get ...
... Combine Schemas? Suppose we combine borrow and loan to get ...