Chapter 11
... contain any unique items that can be used as a primary key • You need to create an identity column specifically to serve as the primary key. This column is known as an identify column. • Identify columns typically contain integers • Each time a new row is added to the table, the DBMS automatically a ...
... contain any unique items that can be used as a primary key • You need to create an identity column specifically to serve as the primary key. This column is known as an identify column. • Identify columns typically contain integers • Each time a new row is added to the table, the DBMS automatically a ...
Concurrency Control
... transaction to be run out without interference from other transaction – can be achieve by locking or timestamping Durability – property of a transaction requires the value that the transaction commit to the database persistent. ...
... transaction to be run out without interference from other transaction – can be achieve by locking or timestamping Durability – property of a transaction requires the value that the transaction commit to the database persistent. ...
Chapter 3 (6th Edition)
... A Relation is a mathematical concept based on the ideas of sets The model was first proposed by Dr. E.F. Codd of IBM Research in 1970 in the following paper: ...
... A Relation is a mathematical concept based on the ideas of sets The model was first proposed by Dr. E.F. Codd of IBM Research in 1970 in the following paper: ...
Database Pointers: a Predictable Way of Manipulating Hot Data in
... mechanisms for achieving fast accesses to data while performing relational operations, such as joins and unions. It was implemented by IBM in an experimental prototype database called System R [6]. A tuple identi er is a data type containing a pointer to one tuple stored either on a hard drive or in ...
... mechanisms for achieving fast accesses to data while performing relational operations, such as joins and unions. It was implemented by IBM in an experimental prototype database called System R [6]. A tuple identi er is a data type containing a pointer to one tuple stored either on a hard drive or in ...
dba - Birkbeck, University of London
... required to work outside 'normal office hours'. The post holder is required to show flexibility in meeting changing support requirements. Any 'out-of-normal-office-hours' working will be compensated via time off in lieu or overtime as appropriate. ...
... required to work outside 'normal office hours'. The post holder is required to show flexibility in meeting changing support requirements. Any 'out-of-normal-office-hours' working will be compensated via time off in lieu or overtime as appropriate. ...
Sistem Informasi Geografis
... of much larger database for far less cost; (ii) the development of more efficient interaction between public agencies; and (iii) all agencies shared the same up-to-date database / information. Database maintenance requires two efforts: ongoing user training (how to maintain the database) and user s ...
... of much larger database for far less cost; (ii) the development of more efficient interaction between public agencies; and (iii) all agencies shared the same up-to-date database / information. Database maintenance requires two efforts: ongoing user training (how to maintain the database) and user s ...
DBA421
... Calculating memory for hash joins and sort operations we only can calculate with the max of the virtual address space. We can not use AWE memory for such operations. Example: Spill out in TempDB Going beyond 16GB, we have to reduce the virtual address space to 2GB. This is contra productive since we ...
... Calculating memory for hash joins and sort operations we only can calculate with the max of the virtual address space. We can not use AWE memory for such operations. Example: Spill out in TempDB Going beyond 16GB, we have to reduce the virtual address space to 2GB. This is contra productive since we ...
Java DataBase Connectivity (JDBC)
... The Statement object provides a workspace where SQL queries can be created, executed, and results collected. e.g. ...
... The Statement object provides a workspace where SQL queries can be created, executed, and results collected. e.g. ...
The Anatomy of a Data Modification
... possible) SQL Server will use row level locking. The rows are locked but there are also “intent” locks at higher levels to make sure other larger locks (like page or table level locks) are not attempted (and fail) There are a few locks that have already occurred – within indexes, etc. to read the da ...
... possible) SQL Server will use row level locking. The rows are locked but there are also “intent” locks at higher levels to make sure other larger locks (like page or table level locks) are not attempted (and fail) There are a few locks that have already occurred – within indexes, etc. to read the da ...
Chapter 2
... Specifies scope and general content Overall picture of organizational data at high level of abstraction Entity-relationship diagram Descriptions of entity types Relationships between entities Business rules ...
... Specifies scope and general content Overall picture of organizational data at high level of abstraction Entity-relationship diagram Descriptions of entity types Relationships between entities Business rules ...
Database Development Process
... Specifies scope and general content Overall picture of organizational data at high level of abstraction Entity-relationship diagram Descriptions of entity types Relationships between entities Business rules ...
... Specifies scope and general content Overall picture of organizational data at high level of abstraction Entity-relationship diagram Descriptions of entity types Relationships between entities Business rules ...
EIN 4905/ESI 6912 Decision Support Systems Excel
... If only one row or column field is given with a paired item name, then this method will return a grand or sub total value from the data field. ...
... If only one row or column field is given with a paired item name, then this method will return a grand or sub total value from the data field. ...
chap16
... Sorting the Records in a Table • Database management software generally allows you to sort a table based on any column, letting you view your data in the way that is most useful to you • After rows are sorted, they also usually can be grouped ...
... Sorting the Records in a Table • Database management software generally allows you to sort a table based on any column, letting you view your data in the way that is most useful to you • After rows are sorted, they also usually can be grouped ...
Datamining :
... A spatial database that stores spatial objects that change with time is called a spatiotemporal database, from which interesting information can be mined. For example, we may be able to group the trends of moving objects and identify some strangely moving vehicles ...
... A spatial database that stores spatial objects that change with time is called a spatiotemporal database, from which interesting information can be mined. For example, we may be able to group the trends of moving objects and identify some strangely moving vehicles ...
Database Market – Major Players
... (DB2) software and solutions support multiple information types such as images, documents, e-mail, Web content, e-records, and multimedia - and provide the appropriate content, based on user intent and relevancy. Designed to help transform business with improved productivity and streamlined complian ...
... (DB2) software and solutions support multiple information types such as images, documents, e-mail, Web content, e-records, and multimedia - and provide the appropriate content, based on user intent and relevancy. Designed to help transform business with improved productivity and streamlined complian ...
Testing PassLeader 70-473 Exam Questions and Answers To 100
... Senior research project leaders must be able to upload databases to the cloud. Initially, the databases will be less than 3 GB. Some databases may grow to 50 GB. The databases must be recoverable to any point during the past two weeks. The research project leaders must monitor the performance of the ...
... Senior research project leaders must be able to upload databases to the cloud. Initially, the databases will be less than 3 GB. Some databases may grow to 50 GB. The databases must be recoverable to any point during the past two weeks. The research project leaders must monitor the performance of the ...
Architecture
... Distributed database Database is physically distributed as semiindependent databases There are communication links between each of the databases Appears as one database ...
... Distributed database Database is physically distributed as semiindependent databases There are communication links between each of the databases Appears as one database ...
CELEX - Euralex
... the entire system will consist of a number of monolingual databases (for the time being Dutch and English), which are structured as parallel as possible. At the beginning of the project, in 1986, most work was devoted to the contents of the Dutch database. Simultaneously, attention was focused on th ...
... the entire system will consist of a number of monolingual databases (for the time being Dutch and English), which are structured as parallel as possible. At the beginning of the project, in 1986, most work was devoted to the contents of the Dutch database. Simultaneously, attention was focused on th ...
Overview of what`s new for developers in SQL Server
... Bulk update, paging, and batching XML Data type support User Defined Type (UDT) support ...
... Bulk update, paging, and batching XML Data type support User Defined Type (UDT) support ...
presentation file
... query processing by the sequential scan: Optimize various parameters such as ...
... query processing by the sequential scan: Optimize various parameters such as ...
SQL Server
... • Developers are familiar with inheritance • The ADO.NET Entity Framework brings inheritance to the conceptual model • The ADO.NET Entity Framework supports three types of inheritance ...
... • Developers are familiar with inheritance • The ADO.NET Entity Framework brings inheritance to the conceptual model • The ADO.NET Entity Framework supports three types of inheritance ...
28jdbc
... What is an RDBMS? • Relational database management system. • There are other kinds of DBMS. • Access is a GUI on a JET RBDMS backend. • Language for RBMS - > SQL ...
... What is an RDBMS? • Relational database management system. • There are other kinds of DBMS. • Access is a GUI on a JET RBDMS backend. • Language for RBMS - > SQL ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.