SQL
... Example 23: Show faculty who are not students (pure faculty). Only show the common columns in the result. SELECT FacSSN AS SSN, FacFirstName AS FirstName, FacLastName AS LastName, FacCity AS City, FacState AS State FROM Faculty MINUS SELECT StdSSN AS SSN, StdFirstName AS FirstName, StdLastName AS La ...
... Example 23: Show faculty who are not students (pure faculty). Only show the common columns in the result. SELECT FacSSN AS SSN, FacFirstName AS FirstName, FacLastName AS LastName, FacCity AS City, FacState AS State FROM Faculty MINUS SELECT StdSSN AS SSN, StdFirstName AS FirstName, StdLastName AS La ...
Reference Book Principles of Distributed Database System
... A label which is the name of the object class A type which is either atomic (integer, string etc.) or set A value which is either atomic or a set of objects An optional object identifier ...
... A label which is the name of the object class A type which is either atomic (integer, string etc.) or set A value which is either atomic or a set of objects An optional object identifier ...
Kroenke-DBP-e10-PPT-Chapter09
... Atomic Transactions • A transaction, or logical unit of work (LUW), is a series of actions taken against the database that occurs as an atomic unit – Either all actions in a transaction occur or none of them do ...
... Atomic Transactions • A transaction, or logical unit of work (LUW), is a series of actions taken against the database that occurs as an atomic unit – Either all actions in a transaction occur or none of them do ...
Reflection support by means of template metaprogramming
... We present how to implement the technique of reflection in C++ by means of template metaprogramming, which allows executing code at compile time which accesses type information without involving a preprocessor. It is supported in standard C++ and can be used with any recent C++ compiler. While refle ...
... We present how to implement the technique of reflection in C++ by means of template metaprogramming, which allows executing code at compile time which accesses type information without involving a preprocessor. It is supported in standard C++ and can be used with any recent C++ compiler. While refle ...
ISSUES CONCERNING THE IMPACT OF THE OBJECT
... aggregate structures and to present them to the end users for interpretation (using some methods related to the data mining tools). For example, the SaintEtiQ summarization model (Sassi et al., 2010) is based on the conceptual models of the statistical databases and of the multidimensional databases ...
... aggregate structures and to present them to the end users for interpretation (using some methods related to the data mining tools). For example, the SaintEtiQ summarization model (Sassi et al., 2010) is based on the conceptual models of the statistical databases and of the multidimensional databases ...
Extreme Performance Data Warehousing
... "By having all of the pieces in the stack—from the silicon all the way up to the application—we'll be able to deliver systems that run faster, are faulttolerant, are highly secure—much more secure, much more performance, much more cost-effective, much easier to use than we ever could have delivered ...
... "By having all of the pieces in the stack—from the silicon all the way up to the application—we'll be able to deliver systems that run faster, are faulttolerant, are highly secure—much more secure, much more performance, much more cost-effective, much easier to use than we ever could have delivered ...
CS490D: Introduction to Data Mining Chris Clifton
... – classification, association, etc. • Data constraint — using SQL-like queries – find product pairs sold together in stores in Vancouver in Dec.’00 • Dimension/level constraint – in relevance to region, price, brand, customer category • Rule (or pattern) constraint – small sales (price < $10) trigge ...
... – classification, association, etc. • Data constraint — using SQL-like queries – find product pairs sold together in stores in Vancouver in Dec.’00 • Dimension/level constraint – in relevance to region, price, brand, customer category • Rule (or pattern) constraint – small sales (price < $10) trigge ...
Microsoft 70-462 Practice Questions Free From
... You are developing a database application by using Microsoft SQL Server 2012. You have a query that runs slower than expected. You need to capture execution plans that will include detailed information on missing indexes recommended by the query optimizer. What should you do? A. Add a HASH hint to t ...
... You are developing a database application by using Microsoft SQL Server 2012. You have a query that runs slower than expected. You need to capture execution plans that will include detailed information on missing indexes recommended by the query optimizer. What should you do? A. Add a HASH hint to t ...
1_11_Ram - NorCal OAUG
... Revolution in Recovery • Flashback Revolutionizes Error Recovery • Operates on just changed data • Time to correct error equals time to make error • Minutes instead of hours ...
... Revolution in Recovery • Flashback Revolutionizes Error Recovery • Operates on just changed data • Time to correct error equals time to make error • Minutes instead of hours ...
cos 346 day 25
... Lack of tools for managing the data warehouse – The organization may have to develop its own tools for managing non-relational data and for maintaining appropriate metadata. Such development is difficult and expensive ...
... Lack of tools for managing the data warehouse – The organization may have to develop its own tools for managing non-relational data and for maintaining appropriate metadata. Such development is difficult and expensive ...
data_migration_tools..
... Only Select Allowed on Source Database Insert/Update/Delete/Script allowed on Target Database, Refer source columns by “:”+column name Query1/Table1 for Source SELECT Statement Query2/Table2 for Target DML Statement ...
... Only Select Allowed on Source Database Insert/Update/Delete/Script allowed on Target Database, Refer source columns by “:”+column name Query1/Table1 for Source SELECT Statement Query2/Table2 for Target DML Statement ...
Powerpoint
... Look at execution plans from large queries not in the cache if you know of any What patterns do you see? ...
... Look at execution plans from large queries not in the cache if you know of any What patterns do you see? ...
Object Database Standards, Languages, and Design
... – An alternative to relational systems – Application domains where objects play central role – Heavily influenced by object-oriented programming languages – An attempt to add DBMS functionality to a programming language environment CIS 671 ...
... – An alternative to relational systems – Application domains where objects play central role – Heavily influenced by object-oriented programming languages – An attempt to add DBMS functionality to a programming language environment CIS 671 ...
Data Warehouse
... then the shrunken product table will have only the category information. (2) add to existing tables • use a “level” field to distinguish aggregate dimension - error prone. ...
... then the shrunken product table will have only the category information. (2) add to existing tables • use a “level” field to distinguish aggregate dimension - error prone. ...
slides - Tsinghua-CMU Double Master Degree Program in
... Users should not have to know where data is physically stored, but rather should be able to behave - at least from a logical standpoint - as if the data were all stored at their own local site. Simplify user programs and terminal activities Allow data to migrate from site to site It is easier to ...
... Users should not have to know where data is physically stored, but rather should be able to behave - at least from a logical standpoint - as if the data were all stored at their own local site. Simplify user programs and terminal activities Allow data to migrate from site to site It is easier to ...
ppt
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (e.g., 2nd column of r deals with the same type of values as does the 2nd column of s) E.g. to find all customers with either an account or a loan ...
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (e.g., 2nd column of r deals with the same type of values as does the 2nd column of s) E.g. to find all customers with either an account or a loan ...
Spatial Concepts and Data Models
... • Alternate shape example: – A road is represented as a polygon for construction or as a line for navigation – A river can be represented as a polygon or a line depending on the scale (multiple ...
... • Alternate shape example: – A road is represented as a polygon for construction or as a line for navigation – A river can be represented as a polygon or a line depending on the scale (multiple ...
Designing and Implementing an Active Personal Health Record
... OWL object property. As presented in Figure 1, we have named this object property ‘MedicationSource’. Note that in the extended PHR ontology, besides the health related concepts, we have presented information that is used by the alerts. For example, the class Alert is comprised of the alerts that a ...
... OWL object property. As presented in Figure 1, we have named this object property ‘MedicationSource’. Note that in the extended PHR ontology, besides the health related concepts, we have presented information that is used by the alerts. For example, the class Alert is comprised of the alerts that a ...
No Slide Title
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (e.g., 2nd column of r deals with the same type of values as does the 2nd column of s) E.g. to find all customers with either an account or a loan ...
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (e.g., 2nd column of r deals with the same type of values as does the 2nd column of s) E.g. to find all customers with either an account or a loan ...
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.