Lecture07a
... Availability: failure of site containing relation r does not result in unavailability of r if replicas exist. Parallelism: queries on r may be processed by several nodes in parallel. Reduced data transfer: relation r is available locally at each site containing a replica of r. Disadvantages ...
... Availability: failure of site containing relation r does not result in unavailability of r if replicas exist. Parallelism: queries on r may be processed by several nodes in parallel. Reduced data transfer: relation r is available locally at each site containing a replica of r. Disadvantages ...
Slide 1
... Can think of one-table-per-property as vertical partitioning super-wide property table Column-store is a natural storage layer to use for vertical partitioning Advantages: ...
... Can think of one-table-per-property as vertical partitioning super-wide property table Column-store is a natural storage layer to use for vertical partitioning Advantages: ...
ppt - CSE, IIT Bombay
... Triggers cannot be used to directly implement external-world actions, BUT Triggers can be used to record actions-to-be-taken in a separate table Have an external process that repeatedly scans the table, carries out external-world actions and deletes action from table E.g. Suppose a warehouse ...
... Triggers cannot be used to directly implement external-world actions, BUT Triggers can be used to record actions-to-be-taken in a separate table Have an external process that repeatedly scans the table, carries out external-world actions and deletes action from table E.g. Suppose a warehouse ...
Chapter 21:Application Development and Administration
... Triggers cannot be used to directly implement external-world actions, BUT Triggers can be used to record actions-to-be-taken in a separate table Have an external process that repeatedly scans the table, carries out external-world actions and deletes action from table E.g. Suppose a warehouse ...
... Triggers cannot be used to directly implement external-world actions, BUT Triggers can be used to record actions-to-be-taken in a separate table Have an external process that repeatedly scans the table, carries out external-world actions and deletes action from table E.g. Suppose a warehouse ...
Setting Up a Hot Standby Database
... Disadvantages of Hot Standby • Hot standby only provides limited load-balancing because all users (except for read-only users) must continue to use the primary. • In contrast, OPS (Oracle Parallel Server) or replication allow use of multiple instances simultaneously. • For databases with heavy tr ...
... Disadvantages of Hot Standby • Hot standby only provides limited load-balancing because all users (except for read-only users) must continue to use the primary. • In contrast, OPS (Oracle Parallel Server) or replication allow use of multiple instances simultaneously. • For databases with heavy tr ...
Case study 29 | Databases and the edge for FreshDirect for students
... customers' lives by giving them a superior on‐line shopping experience. This is enabled through a customer database ‐ the company records details each time a customer shops on their site, such as every unit bought during those visits, and all service interactions. Along with the corporate culture ...
... customers' lives by giving them a superior on‐line shopping experience. This is enabled through a customer database ‐ the company records details each time a customer shops on their site, such as every unit bought during those visits, and all service interactions. Along with the corporate culture ...
the lhc logging
... according to their priorities. These priorities will be discussed with the community of users. Functionality may also be subject to changes driven by the acceptance of particular features by the users and by their requests. These features will be reflected in future releases of the document. This ar ...
... according to their priorities. These priorities will be discussed with the community of users. Functionality may also be subject to changes driven by the acceptance of particular features by the users and by their requests. These features will be reflected in future releases of the document. This ar ...
Student resources - worksheet for Chapter 19
... be printed on a report. For example, suppose we wanted a list, sorted by borrower name, of all books overdue by more than one week. These borrowers could then be sent a letter or postcard reminding them to return their books. The first step is to perform the query: Select the Queries tab from the ...
... be printed on a report. For example, suppose we wanted a list, sorted by borrower name, of all books overdue by more than one week. These borrowers could then be sent a letter or postcard reminding them to return their books. The first step is to perform the query: Select the Queries tab from the ...
worksheet for Chapter 19 - library database
... be printed on a report. For example, suppose we wanted a list, sorted by borrower name, of all books overdue by more than one week. These borrowers could then be sent a letter or postcard reminding them to return their books. The first step is to perform the query: Select the Queries tab from the ...
... be printed on a report. For example, suppose we wanted a list, sorted by borrower name, of all books overdue by more than one week. These borrowers could then be sent a letter or postcard reminding them to return their books. The first step is to perform the query: Select the Queries tab from the ...
ppt - Avi Silberschatz
... Sets a cookie on first interaction with browser, and uses it to identify session on further interactions Provides methods to store and look-up per-session information E.g. user name, preferences, .. ...
... Sets a cookie on first interaction with browser, and uses it to identify session on further interactions Provides methods to store and look-up per-session information E.g. user name, preferences, .. ...
Chapter 21:Application Development and Administration
... do not cause damage to the client machine Easy for limited capability scripting languages, harder for general purpose programming languages like Java E.g. Java’s security system ensures that the Java applet code ...
... do not cause damage to the client machine Easy for limited capability scripting languages, harder for general purpose programming languages like Java E.g. Java’s security system ensures that the Java applet code ...
Introduction Using SQL from Programs - auf Matthias
... Standardized Interface to C / C++ defined by X/OPEN and SQL Access group • Main advantages DBS-independent Application development independent from DBS (as opposed to Embedded SQL precompiler approach, see below) Easy to connect to multiple DB • Microsoft implementation ODBC (= Open Database Connect ...
... Standardized Interface to C / C++ defined by X/OPEN and SQL Access group • Main advantages DBS-independent Application development independent from DBS (as opposed to Embedded SQL precompiler approach, see below) Easy to connect to multiple DB • Microsoft implementation ODBC (= Open Database Connect ...
Entity Sets
... semi-structured data models Older models: network model and hierarchical model ...
... semi-structured data models Older models: network model and hierarchical model ...
transactions_and_recovery
... [start,]: the start of the
execution of the transaction identified
by transaction-id
[read, , X]: the
transaction identified by transaction-id
reads the value of database item X
[write, , X, old-value,
new-value]: the transaction identified by
transac ...
... [start,
Answers to Selected Questions and Problems
... LINE is shown as weak to INVOICE because it borrows the invoice number as part of its primary key and it is existence-dependent on INVOICE. In short, the ERD must reflect the business rules properly and those business rules are derived from the description of operations, which must accurately desc ...
... LINE is shown as weak to INVOICE because it borrows the invoice number as part of its primary key and it is existence-dependent on INVOICE. In short, the ERD must reflect the business rules properly and those business rules are derived from the description of operations, which must accurately desc ...
Chapter 7: Relational Database Design
... Can access elements of array in usual fashion: E.g. author-array[1] Multisets (not supported in SQL:1999) I.e., unordered collections, where an element may occur multiple times Nested relations are sets of tuples SQL:1999 supports arrays of tuples ...
... Can access elements of array in usual fashion: E.g. author-array[1] Multisets (not supported in SQL:1999) I.e., unordered collections, where an element may occur multiple times Nested relations are sets of tuples SQL:1999 supports arrays of tuples ...
Title
... What we should to do to begin use replication or «fast setup of replication» Let’s break something and see what happens How change replication ...
... What we should to do to begin use replication or «fast setup of replication» Let’s break something and see what happens How change replication ...
Wrap-up, review
... OLE DB is Microsoft’s object-oriented interface for relational and other databases. ADO (Active Data Objects) is Microsoft’s standard providing easier access to OLE DB data for the non-object-oriented programmer. Kroenke, Database Processing ...
... OLE DB is Microsoft’s object-oriented interface for relational and other databases. ADO (Active Data Objects) is Microsoft’s standard providing easier access to OLE DB data for the non-object-oriented programmer. Kroenke, Database Processing ...
COMMIT - Telkom University
... Lost updates occur when two or more transactions selects the same row and then update the row based on the value originally selected. Each transactions is unaware of other transactions. The last update overwrites updates made by the other transactions, which results in lost data. A's update of 300 v ...
... Lost updates occur when two or more transactions selects the same row and then update the row based on the value originally selected. Each transactions is unaware of other transactions. The last update overwrites updates made by the other transactions, which results in lost data. A's update of 300 v ...
Chapter 4.1-4.2, 4.5.2, 8.6
... Forms of authorization to modify the database schema (covered in Chapter 8): Index - allows creation and deletion of indices. Resources - allows creation of new relations. Alteration - allows addition or deletion of attributes in a relation. ...
... Forms of authorization to modify the database schema (covered in Chapter 8): Index - allows creation and deletion of indices. Resources - allows creation of new relations. Alteration - allows addition or deletion of attributes in a relation. ...
Implementing a Microsoft® SQL Server® 2008 Database
... concurrency, and job and disk space problems. ...
... concurrency, and job and disk space problems. ...
cos346day20
... • Both data and log files are created by SQL Server • SQL Server provides a wizard for setting up database maintenance plan, e.g., scheduling database and log backups • To recover a database with SQL Server: – The database is restored from a prior database ...
... • Both data and log files are created by SQL Server • SQL Server provides a wizard for setting up database maintenance plan, e.g., scheduling database and log backups • To recover a database with SQL Server: – The database is restored from a prior database ...
Database Transactions in a Purely Declarative Logic Programming
... information. Our motivation is a desire to incorporate such a declarative language as the query and update language of the next release of the Aditi deductive database system [22], which is currently under development. An aim of the Aditi project is to produce a database system with programming faci ...
... information. Our motivation is a desire to incorporate such a declarative language as the query and update language of the next release of the Aditi deductive database system [22], which is currently under development. An aim of the Aditi project is to produce a database system with programming faci ...
Making the Move from SQLite to SQL Server
... Project information is stored in both the drawings and databases Changes are committed to drawings on save SQLite databases are DCF files: ...
... Project information is stored in both the drawings and databases Changes are committed to drawings on save SQLite databases are DCF files: ...
Oracle Database
Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is an object-relational database management system produced and marketed by Oracle Corporation.Larry Ellison and his two friends and former co-workers, Bob Miner and Ed Oates, started a consultancy called Software Development Laboratories (SDL) in 1977. SDL developed the original version of the Oracle software. The name Oracle comes from the code-name of a CIA-funded project Ellison had worked on while previously employed by Ampex.