Transaction Processing and Recovery
... What has happened here? The total is too high because B changed values of A while the total was being computed. The solution is to prevent any changes in any A values while the total is being computed. ...
... What has happened here? The total is too high because B changed values of A while the total was being computed. The solution is to prevent any changes in any A values while the total is being computed. ...
Unannotated Slides - Stanford Lagunita
... Index = difference between full table scans and immediate location of tuples Orders of magnitude performance difference ...
... Index = difference between full table scans and immediate location of tuples Orders of magnitude performance difference ...
Chapter 1
... Entity-Relationship Model (continued) • Many to many (N:M) – Instance can occur multiple times in each entity – Cannot be represented in physical database – Broken down into series of two or more 1:M relationships through use of linking table in process of normalization ...
... Entity-Relationship Model (continued) • Many to many (N:M) – Instance can occur multiple times in each entity – Cannot be represented in physical database – Broken down into series of two or more 1:M relationships through use of linking table in process of normalization ...
Understanding Computers, Chapter 14
... stored would be referred to as a ______________________. a. field b. record c. table 2. True or False: Data validation procedures are used to ensure that data entered into a database matches the specified type, format, and allowable value. 3. The ______________________ contains metadata about the da ...
... stored would be referred to as a ______________________. a. field b. record c. table 2. True or False: Data validation procedures are used to ensure that data entered into a database matches the specified type, format, and allowable value. 3. The ______________________ contains metadata about the da ...
J2EE Technologies and Distributed Multi
... variables side of door which brings message to socket at receiving process ...
... variables side of door which brings message to socket at receiving process ...
Query-based Data Warehousing Tool
... warehouse system, ETL tools are used to supply DW with clean data. This process includes a mapping transformation for the data. The maintenance of these tools to provide evolution is a hard task and time consuming. In order to simplify this task, a full implementation of mapping guideline or mapping ...
... warehouse system, ETL tools are used to supply DW with clean data. This process includes a mapping transformation for the data. The maintenance of these tools to provide evolution is a hard task and time consuming. In order to simplify this task, a full implementation of mapping guideline or mapping ...
Handout
... Process Structure An Oracle process is a program that depending on its type can request information, execute a series of steps, or perform a specific task. On some OS (MS Windows…) these are actually implemented as process threads. Oracle takes advantage of various types of processes: • User proces ...
... Process Structure An Oracle process is a program that depending on its type can request information, execute a series of steps, or perform a specific task. On some OS (MS Windows…) these are actually implemented as process threads. Oracle takes advantage of various types of processes: • User proces ...
SurfControl Web Filter for Cisco CE Installation Guide
... information, you must have the latest version of the Novell Client installed on the SurfControl machine prior to installing the SurfControl software. ...
... information, you must have the latest version of the Novell Client installed on the SurfControl machine prior to installing the SurfControl software. ...
Level 1 - High Point University
... Select query window in Design view has two sections Area for field lists at top of window Design grid below it ...
... Select query window in Design view has two sections Area for field lists at top of window Design grid below it ...
A Semantic Web Knowledge Base System that Supports Large Scale Data Integration
... Following our algorithm described in the last section, creating tables corresponds to the definition of classes or properties in ontology. Each class and property has a table named using its URI. Normally, the ’sub’ and ’obj’ fields are foreign keys from the ’ID’ field of the class tables that are t ...
... Following our algorithm described in the last section, creating tables corresponds to the definition of classes or properties in ontology. Each class and property has a table named using its URI. Normally, the ’sub’ and ’obj’ fields are foreign keys from the ’ID’ field of the class tables that are t ...
DISI - University of Trento Structural Mapping between Natural
... fragments. This allows us to automatically exploit the associative patterns between NL and SQL syntax to detect correct and incorrect pairs from an operational semantics viewpoint. Finally, given a new question and the set of available queries (i.e. the repository of queries asked to the target DB), ...
... fragments. This allows us to automatically exploit the associative patterns between NL and SQL syntax to detect correct and incorrect pairs from an operational semantics viewpoint. Finally, given a new question and the set of available queries (i.e. the repository of queries asked to the target DB), ...
Chapter 15: Concurrency Control
... l Repeatable read: allows only committed records to be read, and repeating a read should return the same value (so read locks should ...
... l Repeatable read: allows only committed records to be read, and repeating a read should return the same value (so read locks should ...
Virtual Private Databases
... – Suppose we want to restrict access to some information in T. – Without VPD, all view definitions have to be changed. – Using VPD, it can be done by attaching a policy function to T; as the policy is enforced in T, the policy is also enforced for all the views that are based on T. ...
... – Suppose we want to restrict access to some information in T. – Without VPD, all view definitions have to be changed. – Using VPD, it can be done by attaching a policy function to T; as the policy is enforced in T, the policy is also enforced for all the views that are based on T. ...
Database Tables and Normalization
... • Conversion to Second Normal Form – Starting with the 1NF format, the database can be converted into the 2NF format by • Writing each key component on a separate line, and then writing the original key on the last line and • Writing the dependent attributes after each new key. PROJECT (PROJ_NUM, PR ...
... • Conversion to Second Normal Form – Starting with the 1NF format, the database can be converted into the 2NF format by • Writing each key component on a separate line, and then writing the original key on the last line and • Writing the dependent attributes after each new key. PROJECT (PROJ_NUM, PR ...
Plateform for Enterprise Solutions Java EE5
... Process the data and generate the results. This process may require talking to a database, executing an RMI or CORBA call, invoking a Web service, or computing the response directly. ...
... Process the data and generate the results. This process may require talking to a database, executing an RMI or CORBA call, invoking a Web service, or computing the response directly. ...
CSO_Gaddis_Java_Chapter16
... • Storing data in traditional text or binary files has its limits – well suited for applications that store only a small amount of data – not practical for applications that must store a large amount of data – simple operations become cumbersome and inefficient as data increases ...
... • Storing data in traditional text or binary files has its limits – well suited for applications that store only a small amount of data – not practical for applications that must store a large amount of data – simple operations become cumbersome and inefficient as data increases ...
Oracle DB Security
... PASSWORD_REUS number of times a password must be changed before a previous password E_MAX can be used again. Default is unlimited. PASSWORD_LOC number of days an account will remain locked after failed login K_TIME attempts has been triggered. Default is 1 day. PASSWORD_GRA number of grace days for ...
... PASSWORD_REUS number of times a password must be changed before a previous password E_MAX can be used again. Default is unlimited. PASSWORD_LOC number of days an account will remain locked after failed login K_TIME attempts has been triggered. Default is 1 day. PASSWORD_GRA number of grace days for ...
original - Kansas State University
... create view v as < query expression > where is any legal SQL expression. The
view name is represented by v.
Once a view is defined, the view name can be used to refer to
the virtual relation that the view generates.
View definition is not the same as creating a new relation by ...
... create view v as < query expression > where
PHP and MySQL
... and the PHP processing script into two files. It is more common to implement both in the same script where the code can produce a
... and the PHP processing script into two files. It is more common to implement both in the same script where the code can produce a
Chapter 6: Integrity and Security Domain Constraints
... ! If there is a chain of foreign-key dependencies across multiple ...
... ! If there is a chain of foreign-key dependencies across multiple ...
Slides from Lecture 24 - Courses - University of California, Berkeley
... database. Therefore, the client deals with proxies only. However, this is transparent to the client: proxies can be used as if they were the actual database objects, since they implement the same interface. Database objects are different from ordinary Java objects (other systems and specs, like JDO, ...
... database. Therefore, the client deals with proxies only. However, this is transparent to the client: proxies can be used as if they were the actual database objects, since they implement the same interface. Database objects are different from ordinary Java objects (other systems and specs, like JDO, ...
Understanding Replication in Databases and Distributed Systems
... Many Classifications tentatives ...
... Many Classifications tentatives ...
