Installing Oracle Software and Creating a Database
... 3)- Long operations: The Long Operations page displays the status of various operations that run for longer than six seconds (in absolute time). These operations currently include many backup and recovery functions, statistics gathering, and query execution. More operations are added for every Oracl ...
... 3)- Long operations: The Long Operations page displays the status of various operations that run for longer than six seconds (in absolute time). These operations currently include many backup and recovery functions, statistics gathering, and query execution. More operations are added for every Oracl ...
Transparency 2 : Relational Databases
... correspond to a many-to-many relationship, as with employees and skills, or to a many-to-one relationship, as with the children of an employee (assuming only one parent is an employee). By "many-to-many" we mean that an employee may have several skills, and a skill may belong to several employees. U ...
... correspond to a many-to-many relationship, as with employees and skills, or to a many-to-one relationship, as with the children of an employee (assuming only one parent is an employee). By "many-to-many" we mean that an employee may have several skills, and a skill may belong to several employees. U ...
Physical Database Design
... Also need to make sure that optimizer uses the indices! (including index-only plans) Need to apply your knowledge of optimizers! ...
... Also need to make sure that optimizer uses the indices! (including index-only plans) Need to apply your knowledge of optimizers! ...
Introduction “Structured Query Language” (SQL)
... two tables match. • DISTINCT means that if the same age and address shows up in multiple rows, only the first instance will be displayed. ...
... two tables match. • DISTINCT means that if the same age and address shows up in multiple rows, only the first instance will be displayed. ...
98_364_Slides_Lesson03
... identified in your statement to form a proper SELECT query: columns to retrieve, tables to retrieve them from, and conditions (if any) which the data must satisfy. • A BETWEEN clause allows you to specify the range to be used in a “between x and y” query format. • The NOT keyword is used to search d ...
... identified in your statement to form a proper SELECT query: columns to retrieve, tables to retrieve them from, and conditions (if any) which the data must satisfy. • A BETWEEN clause allows you to specify the range to be used in a “between x and y” query format. • The NOT keyword is used to search d ...
Fast Food Restaurant Database
... Employee entity shown with disjointness; we don't have much information on the Customer Entity; and most of the data collection is derived from the Order and Item Entity. ...
... Employee entity shown with disjointness; we don't have much information on the Customer Entity; and most of the data collection is derived from the Order and Item Entity. ...
Study Abroad Program Search
... for a keyword in column there are multiple entries Ease of maintenance Insert/Update: required for insertion of distinct new value in case of pub-col while pub-cell needs for every update/insert Same for delete ...
... for a keyword in column there are multiple entries Ease of maintenance Insert/Update: required for insertion of distinct new value in case of pub-col while pub-cell needs for every update/insert Same for delete ...
from instructor
... from instructor; The select clause can contain arithmetic expressions involving the operation, +, –, , and /, and operating on constants or attributes of tuples. The following query would return a relation that is the same as the instructor relation, except that the value of the attribute salar ...
... from instructor; The select clause can contain arithmetic expressions involving the operation, +, –, , and /, and operating on constants or attributes of tuples. The following query would return a relation that is the same as the instructor relation, except that the value of the attribute salar ...
Chapter 1: Introduction
... from instructor; The select clause can contain arithmetic expressions involving the operation, +, –, , and /, and operating on constants or attributes of tuples. The following query would return a relation that is the same as the instructor relation, except that the value of the attribute salar ...
... from instructor; The select clause can contain arithmetic expressions involving the operation, +, –, , and /, and operating on constants or attributes of tuples. The following query would return a relation that is the same as the instructor relation, except that the value of the attribute salar ...
Document
... – An equi-join in which one of the duplicate columns is eliminated in the result table – Most commonly used form of the join ...
... – An equi-join in which one of the duplicate columns is eliminated in the result table – Most commonly used form of the join ...
Decision Tree Construction - Department of Computer Science
... each of several groups of tuples. • Example: For each year, show the number of customers who are born that year. • Conceptually, many queries, one query per year. • Suppose we know that years are between 1900 and 2000, we can write 1001 queries that look like this: SELECT COUNT(*) FROM Customers C W ...
... each of several groups of tuples. • Example: For each year, show the number of customers who are born that year. • Conceptually, many queries, one query per year. • Suppose we know that years are between 1900 and 2000, we can write 1001 queries that look like this: SELECT COUNT(*) FROM Customers C W ...
Order number
... professional education annually. At least ten of the hours must relate directly to fraud detection / deterrence; two hours must focus on ethics. Each month, the Association of Certified Fraud Examiners (www.acfe.com) searches its member database to determine which members need to certify CPE ...
... professional education annually. At least ten of the hours must relate directly to fraud detection / deterrence; two hours must focus on ethics. Each month, the Association of Certified Fraud Examiners (www.acfe.com) searches its member database to determine which members need to certify CPE ...
Lecture Notes #1
... Some terminology • Relation schema: relation name and attribute list. • Database schema: set of all relation schemas in the database. • Database: collection of relations. ...
... Some terminology • Relation schema: relation name and attribute list. • Database schema: set of all relation schemas in the database. • Database: collection of relations. ...
DataBase Project Description Students are introduced to the
... to enter text and data into cells. Insert and delete rows and columns. Ability to look at simple pieces of data and perform operational functions associated with queries (i.e., Quantity*Price = Total Price). Subsequent Application – Cardinality; entities; entity relationships (Primary/Foreign Keys); ...
... to enter text and data into cells. Insert and delete rows and columns. Ability to look at simple pieces of data and perform operational functions associated with queries (i.e., Quantity*Price = Total Price). Subsequent Application – Cardinality; entities; entity relationships (Primary/Foreign Keys); ...
basing a forms data block on a join
... Given that there are already several options available for populating a block with data from more than one table, why bother to describe another method? The answer here is, I think, one of simplicity. Although database views offer an excellent and seamless way to view joined data within your blocks, ...
... Given that there are already several options available for populating a block with data from more than one table, why bother to describe another method? The answer here is, I think, one of simplicity. Although database views offer an excellent and seamless way to view joined data within your blocks, ...
Chapter 3 Notes
... of the following: A relation in the database A constant relation Let E1 and E2 be relational-algebra expressions; the following are ...
... of the following: A relation in the database A constant relation Let E1 and E2 be relational-algebra expressions; the following are ...
Slides
... • Information is stored in tables • Each table contains information about a real word “entity” (e.g., a book, a customer) • Each table contains fields (e.g., BookName, Author, Price) ...
... • Information is stored in tables • Each table contains information about a real word “entity” (e.g., a book, a customer) • Each table contains fields (e.g., BookName, Author, Price) ...
Chapter 7: Relational Database Design
... The match attribute of xsl:template specifies a pattern in XPath Elements in the XML document matching the pattern are processed by the actions within the xsl:template element xsl:value-of selects (outputs) specified values (here, customername) For elements that do not match any template A ...
... The match attribute of xsl:template specifies a pattern in XPath Elements in the XML document matching the pattern are processed by the actions within the xsl:template element xsl:value-of selects (outputs) specified values (here, customername) For elements that do not match any template A ...
Relational-Complete Private Information Retrieval
... to allow a client to retrieve sequences of bits, known as blocks [6]. The servers in such systems are modelled as a database partitioned into a sequence of equal-sized blocks. Communication efficiency is improved when requesting an entire block as more traffic contains useful data, and the server ca ...
... to allow a client to retrieve sequences of bits, known as blocks [6]. The servers in such systems are modelled as a database partitioned into a sequence of equal-sized blocks. Communication efficiency is improved when requesting an entire block as more traffic contains useful data, and the server ca ...
Getting Started with Oracle
... • History provides perspective for where we are today in information technology. The next time you use your computer, your video gaming system, or personal digital assistant, you will realize how far we’ve come to get to this point and what events brought us here. • Data Modeling is the first step i ...
... • History provides perspective for where we are today in information technology. The next time you use your computer, your video gaming system, or personal digital assistant, you will realize how far we’ve come to get to this point and what events brought us here. • Data Modeling is the first step i ...
Physical Database Design for the Relational Database
... It describes the base relations, file organizations, and indexes used to achieve efficient access to the data, and any associated integrity constraints and security measures. ...
... It describes the base relations, file organizations, and indexes used to achieve efficient access to the data, and any associated integrity constraints and security measures. ...
Structured Query Language for Ecological Databases
... two tables match. DISTINCT means that if the same age and address shows up in multiple rows, only the first instance will be displayed. ...
... two tables match. DISTINCT means that if the same age and address shows up in multiple rows, only the first instance will be displayed. ...
Logic and Databases
... • Definition: Let L be a database query language. – The combined complexity of L is the decision problem: given an L-sentence and a database instance D, is ϕ true on D? (does D satisfy ϕ?) (in symbols, does D ϕ?) – The data complexity of L is the family of the following decision problems Pϕ, where ϕ ...
... • Definition: Let L be a database query language. – The combined complexity of L is the decision problem: given an L-sentence and a database instance D, is ϕ true on D? (does D satisfy ϕ?) (in symbols, does D ϕ?) – The data complexity of L is the family of the following decision problems Pϕ, where ϕ ...