Slide 1
... The only logins it knows for certain have the appropriate rights is the db_owner (by virtue of the information stored in sysdatabases) and those who are assigned to the sysadmin fixed server role (since they have all rights anyway). ...
... The only logins it knows for certain have the appropriate rights is the db_owner (by virtue of the information stored in sysdatabases) and those who are assigned to the sysadmin fixed server role (since they have all rights anyway). ...
CS263Lecture1
... table has attributes ID, Name, Address..etc. • Relationships between entities are represented by values stored in columns of the corresponding tables, e.g. Customer_ID is an attribute of both the Customer table and the Order table. This makes it easy to link an order with its customer. ...
... table has attributes ID, Name, Address..etc. • Relationships between entities are represented by values stored in columns of the corresponding tables, e.g. Customer_ID is an attribute of both the Customer table and the Order table. This makes it easy to link an order with its customer. ...
Document
... data entry by displaying special literal characters such as ‘-‘ for SSN attribute and ‘/’ for an attribute whose data type is Date. The purpose of a validation rule is to specify some simple rules which must be satisfied by the entered data for a certain attribute. ...
... data entry by displaying special literal characters such as ‘-‘ for SSN attribute and ‘/’ for an attribute whose data type is Date. The purpose of a validation rule is to specify some simple rules which must be satisfied by the entered data for a certain attribute. ...
OO DBMS - Computer Science
... OODBMS understands and can enforce. The design of class libraries and applications that use these semantics should be portable across various OODBMSs that support the object model The major components of the ODMG architecture for an OODBMS are: An Object Model; An Object Definition Language (ODL ...
... OODBMS understands and can enforce. The design of class libraries and applications that use these semantics should be portable across various OODBMSs that support the object model The major components of the ODMG architecture for an OODBMS are: An Object Model; An Object Definition Language (ODL ...
Database Extract Tool (DeTL)
... real time data extract, DeTL is best tool real time data extract and Active data warehouse purpose. DeTL is also act like database browser and where you can browse the database objects and view and export data into files. The tool will allow you to save your queries that you want reuse the file extr ...
... real time data extract, DeTL is best tool real time data extract and Active data warehouse purpose. DeTL is also act like database browser and where you can browse the database objects and view and export data into files. The tool will allow you to save your queries that you want reuse the file extr ...
Conventional Files versus the Database Files versus Database Pros
... The physical h i ld data t model d l iis called ll d a schema. h • The DDL and DML for a relational database is called SQL (Structured Query Language). • Triggers – programs embedded within a database that are automatically invoked by updates. • Stored procedures – programs embedded within a databas ...
... The physical h i ld data t model d l iis called ll d a schema. h • The DDL and DML for a relational database is called SQL (Structured Query Language). • Triggers – programs embedded within a database that are automatically invoked by updates. • Stored procedures – programs embedded within a databas ...
18: Database System Architectures
... If a lock can be obtained, the lock table is updated directly in shared memory If a lock cannot be immediately obtained, a lock request is noted in the lock table and the process (or thread) then waits for lock to be granted When a lock is released, releasing process updates lock table to reco ...
... If a lock can be obtained, the lock table is updated directly in shared memory If a lock cannot be immediately obtained, a lock request is noted in the lock table and the process (or thread) then waits for lock to be granted When a lock is released, releasing process updates lock table to reco ...
XML with Structural Information Description
... Users might not know the “type” of the node (and not necessary to know). They are interested in what they can do Users retrieved the list of possible operation by issuing a LIST-OPERATION method to the root element of a MMX object Possible operations may include queries, updates, and other model-spe ...
... Users might not know the “type” of the node (and not necessary to know). They are interested in what they can do Users retrieved the list of possible operation by issuing a LIST-OPERATION method to the root element of a MMX object Possible operations may include queries, updates, and other model-spe ...
The Challenges of SQL Load Balancing
... they create a local identity store that can be used to authenticate requests against the database. Ostensibly the credentials match those in the database (or identity store used by the database such as can be configured for MSSQL) and are kept in sync. This obviously poses an operational challenge si ...
... they create a local identity store that can be used to authenticate requests against the database. Ostensibly the credentials match those in the database (or identity store used by the database such as can be configured for MSSQL) and are kept in sync. This obviously poses an operational challenge si ...
Types of Queries - Information Technology
... A query is a description of records that are to be retrieved from a database table. It helps answer questions about the information in a database. For example, “Which students received a G.P.A. of 3.0 or higher?” or “Which students are taking an English course?” When creating a query, the names of t ...
... A query is a description of records that are to be retrieved from a database table. It helps answer questions about the information in a database. For example, “Which students received a G.P.A. of 3.0 or higher?” or “Which students are taking an English course?” When creating a query, the names of t ...
Flashback Transaction Query
... Provides a way to audit the rows of a table and retrieve information about the transactions that changed the rows. Retrieve all committed versions of the rows that exist or ever existed between the time the query was issued and a point in time in the past Use the transaction ID to perform transactio ...
... Provides a way to audit the rows of a table and retrieve information about the transactions that changed the rows. Retrieve all committed versions of the rows that exist or ever existed between the time the query was issued and a point in time in the past Use the transaction ID to perform transactio ...
review - Novella
... Chapter 4 deals with some of the critical issues that go into way a database is actually used in production. Once users have begun to depend upon their database, they find that there are new questions that questions that need to be asked of the data. No matter how good the original design, changes m ...
... Chapter 4 deals with some of the critical issues that go into way a database is actually used in production. Once users have begun to depend upon their database, they find that there are new questions that questions that need to be asked of the data. No matter how good the original design, changes m ...
Ceda Concepts
... As a result many systems tend to only use master-slave replication. This means updates can only be applied to one computer (the “master”) and updates only propagate in one direction to all the “slaves”. This is quite limiting compared to update-anywhere-anytime replication. E.g. users cannot work if ...
... As a result many systems tend to only use master-slave replication. This means updates can only be applied to one computer (the “master”) and updates only propagate in one direction to all the “slaves”. This is quite limiting compared to update-anywhere-anytime replication. E.g. users cannot work if ...
Unifying Data and Domain Knowledge Using Virtual Views Kalyana Krishnan Overview
... databases or OODBMS’s which seem to be the future of databases and which can easily handle such queries. Also they have not compare their test results to any existing system which does similar work, like a system using taxonomy, so they have not proved the efficiency of the system. ...
... databases or OODBMS’s which seem to be the future of databases and which can easily handle such queries. Also they have not compare their test results to any existing system which does similar work, like a system using taxonomy, so they have not proved the efficiency of the system. ...
XML Data Storage
... • Map to relations – If DTD of document is known, can map data to relations – 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 attr ...
... • Map to relations – If DTD of document is known, can map data to relations – 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 attr ...
Cooperative query an..
... Consideration of specific information about a user's state of mind Formulation of intensional answers ...
... Consideration of specific information about a user's state of mind Formulation of intensional answers ...
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. ...
Cooperative Query
... Consideration of specific information about a user's state of mind Formulation of intensional answers ...
... Consideration of specific information about a user's state of mind Formulation of intensional answers ...
Introduction to Oracle - University of Windsor
... block buffer cache and dictionary cache. DBWR performs batch writes of changed block. Since Oracle uses write-ahead logging, DBWR does not need to write blocks when a transaction commits. In the most common case, DBWR writes only when more data needs to be read into the system global area and too fe ...
... block buffer cache and dictionary cache. DBWR performs batch writes of changed block. Since Oracle uses write-ahead logging, DBWR does not need to write blocks when a transaction commits. In the most common case, DBWR writes only when more data needs to be read into the system global area and too fe ...
Distributed DBMS Architecture
... – Gateways - Simple paths are created to other databases without the benefits of one logical database. ...
... – Gateways - Simple paths are created to other databases without the benefits of one logical database. ...
DBMaker Overview We can help you change your software for the
... JDBC is short for Java DataBase Connectivity, and is a Java API that enables Java programs to execute SQL statements. The interface allows Java programs to interact with any SQL-compliant database. Since most relational database management systems (DBMSs) support SQL syntax, and Java can run on most ...
... JDBC is short for Java DataBase Connectivity, and is a Java API that enables Java programs to execute SQL statements. The interface allows Java programs to interact with any SQL-compliant database. Since most relational database management systems (DBMSs) support SQL syntax, and Java can run on most ...
Distributed Databases
... • If all databases answered ”ready to commit”, coordinator sends ”commit” to all databases • If one (or more) databases answered ”cannot commit”, coordinator sends ”abort” to all databases. • Timeout: if one (or more) databases does not answer within a given amount of time, coordinator sends ”abort” ...
... • If all databases answered ”ready to commit”, coordinator sends ”commit” to all databases • If one (or more) databases answered ”cannot commit”, coordinator sends ”abort” to all databases. • Timeout: if one (or more) databases does not answer within a given amount of time, coordinator sends ”abort” ...
Versant Object Database
Versant Object Database (VOD) is an object database software product developed by Versant Corporation.The Versant Object Database enables developers using object oriented languages to transactionally store their information by allowing the respective language to act as the Data Definition Language (DDL) for the database. In other words, the memory model is the database schema model.In general, persistence in VOD in implemented by declaring a list of classes, then providing a transaction demarcation application programming interface to use cases. Respective language integrations adhere to the constructs of that language, including syntactic and directive sugars.Additional APIs exist, beyond simple transaction demarcation, providing for the more advanced capabilities necessary to address practical issues found when dealing with performance optimization and scalability for systems with large amounts of data, many concurrent users, network latency, disk bottlenecks, etc.