Lecture 1
... Using Spatial Operation in WHERE clause Query: Find the names of all countries which are neighbors of the United States (USA) in the Country table. SELECT C1.Name AS "Neighbors of USA" FROM Country C1,Country C2 WHERE Touch(C1.Shape,C2.Shape)=1 AND C2.Name =‘USA ’ Note: Spatial operator Touch() is ...
... Using Spatial Operation in WHERE clause Query: Find the names of all countries which are neighbors of the United States (USA) in the Country table. SELECT C1.Name AS "Neighbors of USA" FROM Country C1,Country C2 WHERE Touch(C1.Shape,C2.Shape)=1 AND C2.Name =‘USA ’ Note: Spatial operator Touch() is ...
0 1986 ACM 0-89791-191-1/86/0500/0340 $00 75 340
... be best served by the ability to add new data types and new operators to a DBMS Moreover, B-trees are only appropriate for certain kinds of data, and new access methods are often required for some data types For example, K-D-B trees [ROB1811 and R-trees [GUTM84] are appropriate access methods for po ...
... be best served by the ability to add new data types and new operators to a DBMS Moreover, B-trees are only appropriate for certain kinds of data, and new access methods are often required for some data types For example, K-D-B trees [ROB1811 and R-trees [GUTM84] are appropriate access methods for po ...
Course Review
... Unlike spreadsheet cells, an attribute set of values can only hold data. © 2003 Monash IT Pty Ltd ...
... Unlike spreadsheet cells, an attribute set of values can only hold data. © 2003 Monash IT Pty Ltd ...
Structured Query Language
... KROENKE and AUER - DATABASE CONCEPTS (6th Edition) Copyright © 2013 Pearson Education, Inc. Publishing as Prentice Hall ...
... KROENKE and AUER - DATABASE CONCEPTS (6th Edition) Copyright © 2013 Pearson Education, Inc. Publishing as Prentice Hall ...
Proceedings of the Fourth International Natural Language
... Relations in the semantic graph are also described in terms of their semantic type. Since relations are always realised as verbs, their semantic type also defines the subcategorisation frame associated with that verb. For the moment, subcategorisation frames are imported from a locally compiled dict ...
... Relations in the semantic graph are also described in terms of their semantic type. Since relations are always realised as verbs, their semantic type also defines the subcategorisation frame associated with that verb. For the moment, subcategorisation frames are imported from a locally compiled dict ...
Database
... chosen to appear in the result table, and includes the tables or views needed to join tables to process the query. WHERE Includes the conditions for row selection within a single table or view, and the conditions between tables or views for joining. The first two are required, and the third is neces ...
... chosen to appear in the result table, and includes the tables or views needed to join tables to process the query. WHERE Includes the conditions for row selection within a single table or view, and the conditions between tables or views for joining. The first two are required, and the third is neces ...
PPT - UCLA Computer Science
... Trigger to Maintain credits_earned value create trigger credits_earned after update of takes on ...
... Trigger to Maintain credits_earned value create trigger credits_earned after update of takes on ...
Click install Installation Oracle 11g Express
... users loaded into the default install.Once of these users is named HR. To unlock the HR user so you can experiment with it, do the following: Open SQL*Developer and open the connection for system-xe that we created in the last section. After the SQL Worksheet displays, type command ...
... users loaded into the default install.Once of these users is named HR. To unlock the HR user so you can experiment with it, do the following: Open SQL*Developer and open the connection for system-xe that we created in the last section. After the SQL Worksheet displays, type command ...
Developing an Application Concept of Data Dependencies of Transactions to Relational Databases
... Information systems usually use a relational database to store the application data. The relational database can be used outside of the scope of the application. The information systems has to verify the attributes to be the attributes of the transactions to the relational database. The integrity ve ...
... Information systems usually use a relational database to store the application data. The relational database can be used outside of the scope of the application. The information systems has to verify the attributes to be the attributes of the transactions to the relational database. The integrity ve ...
DATABASE DEPENDENCIES
... (in each application, new variables are substituted for existential variables); in the case of an equality-generating dependency, variables are equated until the dependency is satisfied. The result, chase(C), which may be infinite, can be seen as a model for C. It is the case that C |= c if and only ...
... (in each application, new variables are substituted for existential variables); in the case of an equality-generating dependency, variables are equated until the dependency is satisfied. The result, chase(C), which may be infinite, can be seen as a model for C. It is the case that C |= c if and only ...
Introduction to XML
... Bottom-level elements and attributes are mapped to attributes of relations A relation is created for each element type An id attribute to store a unique id for each element all element attributes become relation attributes All subelements that occur only once become attributes – For text-v ...
... Bottom-level elements and attributes are mapped to attributes of relations A relation is created for each element type An id attribute to store a unique id for each element all element attributes become relation attributes All subelements that occur only once become attributes – For text-v ...
Nested Relational Databases
... attributes must be atomic; that is, an attribute must not be an n-tuple and therefore cannot be a set, list or, most importantly, a table or a complex data structure. This means that tables cannot be nested in a 1NF database. Figure 2 shows a nested table that does not conform to 1NF. Figure 3 illus ...
... attributes must be atomic; that is, an attribute must not be an n-tuple and therefore cannot be a set, list or, most importantly, a table or a complex data structure. This means that tables cannot be nested in a 1NF database. Figure 2 shows a nested table that does not conform to 1NF. Figure 3 illus ...
Chapter 4: SQL
... numeric(p,d). Fixed point number, with user-specified precision of p digits, with n digits to the right of decimal point. real, double precision. Floating point and double-precision floating point numbers, with machine-dependent precision. float(n). Floating point number, with user-specified precisi ...
... numeric(p,d). Fixed point number, with user-specified precision of p digits, with n digits to the right of decimal point. real, double precision. Floating point and double-precision floating point numbers, with machine-dependent precision. float(n). Floating point number, with user-specified precisi ...
XPEDIA: XML Processing for Data Integration by Amit
... XPEDIA job definition XPEDIA translates the job definition to a Read Table ...
... XPEDIA job definition XPEDIA translates the job definition to a Read Table ...