worksheet for Chapter 19 - library database
... Queries are also used to pick out records satisfying particular criteria and sort or summarise them ready to 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 rem ...
... Queries are also used to pick out records satisfying particular criteria and sort or summarise them ready to 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 rem ...
Querying the Uncertain Position of Moving Objects
... of the object. Obviously the motion vector of an object can change (thus it can be updated), but in most cases it does so less frequently than the position of the object. We propose a data model called Moving Objects Spatio-Temporal (or MOST for short) for databases with dynamic attributes, i.e. att ...
... of the object. Obviously the motion vector of an object can change (thus it can be updated), but in most cases it does so less frequently than the position of the object. We propose a data model called Moving Objects Spatio-Temporal (or MOST for short) for databases with dynamic attributes, i.e. att ...
Student resources - worksheet for Chapter 19
... Queries are also used to pick out records satisfying particular criteria and sort or summarise them ready to 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 rem ...
... Queries are also used to pick out records satisfying particular criteria and sort or summarise them ready to 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 rem ...
Advanced Databases - Work To Do Home page
... characters are provided then a data validation error would occur ...
... characters are provided then a data validation error would occur ...
Role
... Note 1: Oracle Database treats a Java class, source, or resource as if it were a procedure for purposes of granting object privileges. ...
... Note 1: Oracle Database treats a Java class, source, or resource as if it were a procedure for purposes of granting object privileges. ...
ConcurrencyControl
... No conflict: transactions can execute at the same time Upon first conflict: the second transaction has to wait until the first transaction commits/aborts Locks: Two types, because two read operations do not conflict Basics of locking: Each transaction Ti must obtain a S (shared) lock on object bef ...
... No conflict: transactions can execute at the same time Upon first conflict: the second transaction has to wait until the first transaction commits/aborts Locks: Two types, because two read operations do not conflict Basics of locking: Each transaction Ti must obtain a S (shared) lock on object bef ...
MySQL Conceptual Architecture
... The MySQL application layer is where the clients and users interact with the MySQL RDBMS. There are three components in this layer as can be seen in the layered MySQL architecture diagram in Figure 3. These components illustrate the different kinds of users that can interact with the MySQL RDBMS, wh ...
... The MySQL application layer is where the clients and users interact with the MySQL RDBMS. There are three components in this layer as can be seen in the layered MySQL architecture diagram in Figure 3. These components illustrate the different kinds of users that can interact with the MySQL RDBMS, wh ...
PDF file .07MB
... which resulted in a variety of tools and databases. Relevant here were a C++ class library providing an in-memory representation of protein structure (PDBlib, Chang et al., 1994); a persistent version of PDBlib implemented using ObjectStore™ (OOPDB, Shindyalov et al., 1995); and a powerful query lan ...
... which resulted in a variety of tools and databases. Relevant here were a C++ class library providing an in-memory representation of protein structure (PDBlib, Chang et al., 1994); a persistent version of PDBlib implemented using ObjectStore™ (OOPDB, Shindyalov et al., 1995); and a powerful query lan ...
Remaining topics in JDBC
... calls that are then passed to the ODBC driver. The ODBC binary code must be loaded on every client computer that uses this type of driver. Native-API, partly Java driver, also called Type 2. Converts JDBC API calls into DBMS-specific client API calls. Like the bridge driver, this type of driver requ ...
... calls that are then passed to the ODBC driver. The ODBC binary code must be loaded on every client computer that uses this type of driver. Native-API, partly Java driver, also called Type 2. Converts JDBC API calls into DBMS-specific client API calls. Like the bridge driver, this type of driver requ ...
slides19
... We want to store the data on “a server” But the problem is we do not trust “the server” for sensitive information! ...
... We want to store the data on “a server” But the problem is we do not trust “the server” for sensitive information! ...
Database and Database Users Databases and Database Users
... Insulation between Programs and Data, and Data Abstraction In traditional file processing, the structure of data files is embedded in the application programs, so any changes to the structure of a file may require changing all programs that access this file. By contrast, DBMS access programs do not ...
... Insulation between Programs and Data, and Data Abstraction In traditional file processing, the structure of data files is embedded in the application programs, so any changes to the structure of a file may require changing all programs that access this file. By contrast, DBMS access programs do not ...
Ensuring Your Database is Backed Up Correctly
... 4. At Backup Location, click the ellipsis on the far right. A Windows Explorer window will appear, viewing the default SQL Backup folder 5. Select the BAK file you wish to restore*. Click Open 6. Check the box “Replace Existing Database” 7. Click on Start Restore 8. Once complete, close the DB Manag ...
... 4. At Backup Location, click the ellipsis on the far right. A Windows Explorer window will appear, viewing the default SQL Backup folder 5. Select the BAK file you wish to restore*. Click Open 6. Check the box “Replace Existing Database” 7. Click on Start Restore 8. Once complete, close the DB Manag ...
Database Administration and Tuning
... presence of storage constraints, or for a workload containing updates, making a global choice for a workload is difficult. For example, a clustered index on a table and horizontal part ...
... presence of storage constraints, or for a workload containing updates, making a global choice for a workload is difficult. For example, a clustered index on a table and horizontal part ...
SDLC Tute - Information Management and Systems
... freely available. For the most part, the commands and command syntax used in MySQL are identical to that used by other relational DBMS programs such as Oracle, SQL Server and DB2 to name a few. In some cases, the commands and syntax used in MySQL may differ slightly from those used by other DBMS pro ...
... freely available. For the most part, the commands and command syntax used in MySQL are identical to that used by other relational DBMS programs such as Oracle, SQL Server and DB2 to name a few. In some cases, the commands and syntax used in MySQL may differ slightly from those used by other DBMS pro ...
Rolf Apweiler
... Involved linking the Aristotle Java API to the BioJava & DAZZLE Java API's Issues with enabling a useful entry_point command ...
... Involved linking the Aristotle Java API to the BioJava & DAZZLE Java API's Issues with enabling a useful entry_point command ...
here
... user’s actions do not adversely impact another user’s actions • At the core of concurrency is accessibility. In one extreme, data becomes inaccessible once a user touches the data. This ensures that data that is being considered for update is not shown. In the other extreme, data is always readable. ...
... user’s actions do not adversely impact another user’s actions • At the core of concurrency is accessibility. In one extreme, data becomes inaccessible once a user touches the data. This ensures that data that is being considered for update is not shown. In the other extreme, data is always readable. ...
Session 8: Working with Form
... Session data: can be trusted if the value is set based on validated data. $_SERVER[] super global: comes from browser, can’t be trusted User data should be checked and escaped properly ...
... Session data: can be trusted if the value is set based on validated data. $_SERVER[] super global: comes from browser, can’t be trusted User data should be checked and escaped properly ...
Logical Standby – Setup
... ● For r/w access - Setup private synonyms over database links to the new development user. ● For r/o access – Use public synonyms from production schemas or create private synonyms. ...
... ● For r/w access - Setup private synonyms over database links to the new development user. ● For r/o access – Use public synonyms from production schemas or create private synonyms. ...
Teaching Scheme Business Information Technology/Software
... This lecture describes the concept and the features of distributed database systems. What are the needs for a distributed database environment? What are the features of a DDBMS? What models and platforms support distributed databases? What are the alternatives to a distributed database? What are the ...
... This lecture describes the concept and the features of distributed database systems. What are the needs for a distributed database environment? What are the features of a DDBMS? What models and platforms support distributed databases? What are the alternatives to a distributed database? What are the ...
Database Modeling in UML
... careful consideration in the process of mapping to the relational domain. ...
... careful consideration in the process of mapping to the relational domain. ...
Oracle RAC Installation
... Once you have partitioned the disks, navigate to C:\temp\preinstall_rac\olm directory and run the OracleOBJService at the command line as below:OracleOBJService /install This will install the service to manage the object links in the ‘Services’ panel. Once done, from the same directory run the GuiOb ...
... Once you have partitioned the disks, navigate to C:\temp\preinstall_rac\olm directory and run the OracleOBJService at the command line as below:OracleOBJService /install This will install the service to manage the object links in the ‘Services’ panel. Once done, from the same directory run the GuiOb ...
Access Tutorial 3
... allows you to specify that only records that match your criteria will be displayed. To specify an exact match, use the criteria row in your query design grid. When you run the query after specifying an exact match, only those records that meet the criteria will be displayed. An exact match con ...
... allows you to specify that only records that match your criteria will be displayed. To specify an exact match, use the criteria row in your query design grid. When you run the query after specifying an exact match, only those records that meet the criteria will be displayed. An exact match con ...
Using Links to prototype a Database Wiki
... early 20092 . There is a basic tension between structure and flexibility. Systems such as MediaWiki (used by Wikipedia and many biological database projects) employ relational database technology internally to provide efficient and robust concurrent access to many users, but the data managed by thes ...
... early 20092 . There is a basic tension between structure and flexibility. Systems such as MediaWiki (used by Wikipedia and many biological database projects) employ relational database technology internally to provide efficient and robust concurrent access to many users, but the data managed by thes ...
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.