branch-name
... average account balance is greater than $1200. select branch-name, avg-balance from (select branch-name, avg (balance) from account group by branch-name) as result (branch-name, avg-balance) where avg-balance > 1200 Note that we do not need to use the having clause, since we compute the temporary (v ...
... average account balance is greater than $1200. select branch-name, avg-balance from (select branch-name, avg (balance) from account group by branch-name) as result (branch-name, avg-balance) where avg-balance > 1200 Note that we do not need to use the having clause, since we compute the temporary (v ...
Chapter 1: Introduction
... select ID, name, salary/12 as monthly_salary from instructor; Note: “as” 是在最後做，所以新定義的屬性名稱不能用在query其他地方 Tuple variables: “as”放在from clause ...
... select ID, name, salary/12 as monthly_salary from instructor; Note: “as” 是在最後做，所以新定義的屬性名稱不能用在query其他地方 Tuple variables: “as”放在from clause ...
XML
... • The design of the template presentation must be tightly coupled with the arrangement of document data stored in the repository. • The component in the design of presentation must be properly associated with corresponding nodes in the object database schema. XML Object Database and Applications 10/ ...
... • The design of the template presentation must be tightly coupled with the arrangement of document data stored in the repository. • The component in the design of presentation must be properly associated with corresponding nodes in the object database schema. XML Object Database and Applications 10/ ...
Chapter 17: Parallel Databases
... Choose an attribute as the partitioning attribute. A partitioning vector [vo, v1, ..., vn-2] is chosen. Let v be the partitioning attribute value of a tuple. Tuples such that vi vi+1 go to disk I + 1. Tuples with v < v0 go to disk 0 and tuples with v vn-2 go to disk n-1. E.g., with a parti ...
... Choose an attribute as the partitioning attribute. A partitioning vector [vo, v1, ..., vn-2] is chosen. Let v be the partitioning attribute value of a tuple. Tuples such that vi vi+1 go to disk I + 1. Tuples with v < v0 go to disk 0 and tuples with v vn-2 go to disk n-1. E.g., with a parti ...
2.4. the database management system
... calculations in the table- structure based on the formula of our choice. Access was exclusively made for the storage and managing of the data. The aim of my lecture notes is to set forth the usage of the programme – Microsoft Access– as well as displaying the way it should be taught to the public, p ...
... calculations in the table- structure based on the formula of our choice. Access was exclusively made for the storage and managing of the data. The aim of my lecture notes is to set forth the usage of the programme – Microsoft Access– as well as displaying the way it should be taught to the public, p ...
The state of Database Forensic research - ICSA
... either inferred or reconstructed. The data model and data dictionary are not considered in this process [9]. How can one then be certain that the data is interpreted correctly without the data dictionary? How can one be certain that the data was correctly carved without the data model? What complica ...
... either inferred or reconstructed. The data model and data dictionary are not considered in this process [9]. How can one then be certain that the data is interpreted correctly without the data dictionary? How can one be certain that the data was correctly carved without the data model? What complica ...
Chapter 18 - Java Database Connectivity (JDBC)
... The Internet and World Wide Web How to Program Complete Training Course C++ How to Program 2/e and Getting Started with Visual C++ 5.0 Tutorial Java How to Program 2/e and Getting Started with Visual J++ 1.1 Tutorial The Complete C++ Training Course 2/e and Getting Started with Visual C++ 5.0 Tutori ...
... The Internet and World Wide Web How to Program Complete Training Course C++ How to Program 2/e and Getting Started with Visual C++ 5.0 Tutorial Java How to Program 2/e and Getting Started with Visual J++ 1.1 Tutorial The Complete C++ Training Course 2/e and Getting Started with Visual C++ 5.0 Tutori ...
Proceedings of USITS ’03: 4th USENIX Symposium on Internet Technologies and Systems
... Second, the computational cost of read queries is typically much larger than that of update queries. A typical update query consists of updating a single record selected by an equality test on a customer name or a product identifier. In contrast, read queries may involve complex search criteria invo ...
... Second, the computational cost of read queries is typically much larger than that of update queries. A typical update query consists of updating a single record selected by an equality test on a customer name or a product identifier. In contrast, read queries may involve complex search criteria invo ...
EMC VMAX WITH ORACLE DATABASE 12c With EMC VMAX
... publication date. The information is subject to change without notice. The information in this publication is provided as is. EMC Corporation makes no representations or warranties of any kind with respect to the information in this publication, and specifically disclaims implied warranties of merch ...
... publication date. The information is subject to change without notice. The information in this publication is provided as is. EMC Corporation makes no representations or warranties of any kind with respect to the information in this publication, and specifically disclaims implied warranties of merch ...
Formal Relational Query Languages
... G1, G2 …, Gn is a list of attributes on which to group (can be empty) ...
... G1, G2 …, Gn is a list of attributes on which to group (can be empty) ...
Course Name : Database Management Systems
... parts by Suppliers. Write the following queries in relational algebra, tuple relational calculus, and domain relational calculus: 1. Find the names of suppliers who supply some red part. 2. Find the sids of suppliers who supply some red or green part. 3. Find the sids of suppliers who supply some re ...
... parts by Suppliers. Write the following queries in relational algebra, tuple relational calculus, and domain relational calculus: 1. Find the names of suppliers who supply some red part. 2. Find the sids of suppliers who supply some red or green part. 3. Find the sids of suppliers who supply some re ...
LabVIEW Database Connectivity Toolkit User Manual
... the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including negligence. Any action against National Instruments must be brought within one year after the cause of action accrues. National Instruments shall not be liable for any delay in p ...
... the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including negligence. Any action against National Instruments must be brought within one year after the cause of action accrues. National Instruments shall not be liable for any delay in p ...
Unstructured Data Management with Oracle Database 12c
... For decades now, Oracle database technology has been used to address the unique problems encountered when managing large volumes of all forms of information. Databases are often used to catalog and reference documents, images and media content stored in files through “pointer-based” implementations. ...
... For decades now, Oracle database technology has been used to address the unique problems encountered when managing large volumes of all forms of information. Databases are often used to catalog and reference documents, images and media content stored in files through “pointer-based” implementations. ...
Slides - CIS @ Temple University
... Efficient techniques for detecting duplicate derivations of expressions ...
... Efficient techniques for detecting duplicate derivations of expressions ...
Document
... Find the names of all customers who have a loan at the Perryridge branch. Which one is better?? ...
... Find the names of all customers who have a loan at the Perryridge branch. Which one is better?? ...
Chapter 5: Other Relational Languages
... tuples to the user, the selected tuples are removed from the database. Can delete only whole tuples; cannot delete values on only particular attributes A deletion is expressed in relational algebra by: ...
... tuples to the user, the selected tuples are removed from the database. Can delete only whole tuples; cannot delete values on only particular attributes A deletion is expressed in relational algebra by: ...
Study Guide for Midterm 2, PPT - Department of Computer Science
... It is possible for tuples to have a null value, denoted by null, for ...
... It is possible for tuples to have a null value, denoted by null, for ...
LabVIEW Database Connectivity Toolkit User Manual
... the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including negligence. Any action against National Instruments must be brought within one year after the cause of action accrues. National Instruments shall not be liable for any delay in p ...
... the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including negligence. Any action against National Instruments must be brought within one year after the cause of action accrues. National Instruments shall not be liable for any delay in p ...
Planejamento
... Author’s ID number in the database. In the books database, this integer column is defined as autoincremented. For each row inserted in this table, the database automatically increments the authorID value to ensure that each row has a unique authorID. This column represents the table’s primary key. f ...
... Author’s ID number in the database. In the books database, this integer column is defined as autoincremented. For each row inserted in this table, the database automatically increments the authorID value to ensure that each row has a unique authorID. This column represents the table’s primary key. f ...
from instructor
... from instructor as T, instructor as S where T.salary > S.salary and S.dept_name = ‘Comp. Sci.’; Keyword as is optional and may be omitted instructor as T ≡ instructor T ...
... from instructor as T, instructor as S where T.salary > S.salary and S.dept_name = ‘Comp. Sci.’; Keyword as is optional and may be omitted instructor as T ≡ instructor T ...
Chapter 1: Introduction
... from instructor as T, instructor as S where T.salary > S.salary and S.dept_name = ‘Comp. Sci.’; Keyword as is optional and may be omitted instructor as T ≡ instructor T ...
... from instructor as T, instructor as S where T.salary > S.salary and S.dept_name = ‘Comp. Sci.’; Keyword as is optional and may be omitted instructor as T ≡ instructor T ...
Chapter 4: SQL - Avi Silberschatz
... average account balance is greater than $1200. select branch-name, avg-balance from (select branch-name, avg (balance) from account group by branch-name) as result (branch-name, avg-balance) where avg-balance > 1200 Note that we do not need to use the having clause, since we compute the temporary (v ...
... average account balance is greater than $1200. select branch-name, avg-balance from (select branch-name, avg (balance) from account group by branch-name) as result (branch-name, avg-balance) where avg-balance > 1200 Note that we do not need to use the having clause, since we compute the temporary (v ...