Introduction to Access
... you need to save data and dynamically search data as well as derive new data, more powerful than Excel. • It is especially useful when the application concerns about huge amount of information. ...
... you need to save data and dynamically search data as well as derive new data, more powerful than Excel. • It is especially useful when the application concerns about huge amount of information. ...
Transforming Extended Entity-Relationship Model into Object
... of each entity participating in the Relationship, which may have value of one-to-one, one-to-many or many-to-many. We use one-to-many connectivity to represent for many-to-one connectivity, with the replacement of the two entities in both sides. The degree of Relationship may be unary (recursive bin ...
... of each entity participating in the Relationship, which may have value of one-to-one, one-to-many or many-to-many. We use one-to-many connectivity to represent for many-to-one connectivity, with the replacement of the two entities in both sides. The degree of Relationship may be unary (recursive bin ...
Emerging DB Technologies
... retrieval opens up many issues performance problem solving efforts are experimental ...
... retrieval opens up many issues performance problem solving efforts are experimental ...
How to run database update scripts
... Webmin on the server. Make sure you have a folder that is owned by postgres on the server. (we usually create a db_repository folder under /home.) In webmin, go into the database and at the bottom select Backup. Select the folder and name to be backed up. Select Custom as the back up type. We normal ...
... Webmin on the server. Make sure you have a folder that is owned by postgres on the server. (we usually create a db_repository folder under /home.) In webmin, go into the database and at the bottom select Backup. Select the folder and name to be backed up. Select Custom as the back up type. We normal ...
No Slide Title
... database application system” 1) What is the title of your project? 2) Names of members in your team. 3) Draw the E-R Diagram of your application system. (You can just give a similar diagram.) 4) Draw a table to show one relation used in the system 5) Check your answer in d) to see whether it is in t ...
... database application system” 1) What is the title of your project? 2) Names of members in your team. 3) Draw the E-R Diagram of your application system. (You can just give a similar diagram.) 4) Draw a table to show one relation used in the system 5) Check your answer in d) to see whether it is in t ...
Introduction to Database Systems
... Data integrity & security. Support application development. Concurrent access by multiple users. Crash recovery. Data analysis, mining, visualization, … Lecture 1 ...
... Data integrity & security. Support application development. Concurrent access by multiple users. Crash recovery. Data analysis, mining, visualization, … Lecture 1 ...
redo log files
... number of bytes of physical database space on disk. (Standard and non-standard block sizes) – A data block size is specified for each Oracle database when the database is created. – A database uses and allocates free database space in Oracle data blocks. ...
... number of bytes of physical database space on disk. (Standard and non-standard block sizes) – A data block size is specified for each Oracle database when the database is created. – A database uses and allocates free database space in Oracle data blocks. ...
Knowledge management systems
... and their relationships. An entity is a person, place, thing, or event about which information is maintained. A record generally describes an entity. An attribute is a particular characteristic or quality of a particular entity. The primary key is a field that uniquely identifies a record. Secondary ...
... and their relationships. An entity is a person, place, thing, or event about which information is maintained. A record generally describes an entity. An attribute is a particular characteristic or quality of a particular entity. The primary key is a field that uniquely identifies a record. Secondary ...
Management of organizational memories
... Indicating whether stored values for this data item must be unique (unique compared to other values of the item within the same table or record type). The unique option is also required for identifiers. ...
... Indicating whether stored values for this data item must be unique (unique compared to other values of the item within the same table or record type). The unique option is also required for identifiers. ...
ProgressBook Suite Maintenance
... Recommendations: Run an integrity check once a week at night for StudentInformation and GradeBook. Additional: Nightly with Physical_Only for StudentInformation On Error: – Backup recovery – Drop/recreate bad tables, if possible ...
... Recommendations: Run an integrity check once a week at night for StudentInformation and GradeBook. Additional: Nightly with Physical_Only for StudentInformation On Error: – Backup recovery – Drop/recreate bad tables, if possible ...
E-R Modeling - CSCI 6442
... say “it’s to make rows unique” or “to provide a unique identifier.” This is terribly wrong! That’s a fine idea for an Excel spreadsheet but it shows a misunderstanding of what a relation is and what a tuple is. Tuples are naturally unique because each one corresponds to a distinct instance of an ent ...
... say “it’s to make rows unique” or “to provide a unique identifier.” This is terribly wrong! That’s a fine idea for an Excel spreadsheet but it shows a misunderstanding of what a relation is and what a tuple is. Tuples are naturally unique because each one corresponds to a distinct instance of an ent ...
Database System Design and Implementation
... -To master fundamental ideas of database technology. -To learn how to design databases using ER diagrams and the relational model -To know current new technology on database ...
... -To master fundamental ideas of database technology. -To learn how to design databases using ER diagrams and the relational model -To know current new technology on database ...
Databases Study Guide
... Connectors – words like OR and AND used in searching databases which indicate whether records satisfy one rule (OR) or if both rules must be satisfied (AND). Counter Field – used in many databases to identify each record uniquely, like creating a unique invoice number in an invoice database. Also kn ...
... Connectors – words like OR and AND used in searching databases which indicate whether records satisfy one rule (OR) or if both rules must be satisfied (AND). Counter Field – used in many databases to identify each record uniquely, like creating a unique invoice number in an invoice database. Also kn ...
R-GMA - SNS Courseware
... R-GMA can be dropped into the framework with very little disruption 1. Set up calls for mySQL are replaced by those for R-GMA producers 2. An archiver (joint consumer/producer) runs on a single machine which collects the data from all the running jobs and writes it to a local database (and possible ...
... R-GMA can be dropped into the framework with very little disruption 1. Set up calls for mySQL are replaced by those for R-GMA producers 2. An archiver (joint consumer/producer) runs on a single machine which collects the data from all the running jobs and writes it to a local database (and possible ...
Data & Databases
... How can a single, unified database meet the differing requirements of so many users? A DBMS minimizes these problems by providing two “views” of the database data: The physical view deals with the actual, physical arrangement and location of data in the direct access storage devices (DASD). ...
... How can a single, unified database meet the differing requirements of so many users? A DBMS minimizes these problems by providing two “views” of the database data: The physical view deals with the actual, physical arrangement and location of data in the direct access storage devices (DASD). ...
Talk Slides - The Stanford University InfoLab
... Privacy according to SB 1386 ”…first name or first initial and last name in combination with any one or more of the following data elements, when either the name or the data elements are not encrypted: ...
... Privacy according to SB 1386 ”…first name or first initial and last name in combination with any one or more of the following data elements, when either the name or the data elements are not encrypted: ...
Concurrent Control
... • Locking is the most widely used approach to ensure serializability of concurrent transactions. • Shared lock: read only access • Exclusive lock: for both read and write access. ...
... • Locking is the most widely used approach to ensure serializability of concurrent transactions. • Shared lock: read only access • Exclusive lock: for both read and write access. ...
Database
... space to contain base tables, views, constraints, indexes, and other database objects. In most systems, the privilege of creating or dropping databases may be reserved for the database administrator, and you may need to ask to have a database created. ...
... space to contain base tables, views, constraints, indexes, and other database objects. In most systems, the privilege of creating or dropping databases may be reserved for the database administrator, and you may need to ask to have a database created. ...
Object
... used in e-commerce • XML was developed because of need for data exchange between organizations and inability of HTML to specify structure and meaning of data ...
... used in e-commerce • XML was developed because of need for data exchange between organizations and inability of HTML to specify structure and meaning of data ...
Row-Level Security
... • Compatible with RLS in other leading products Centralized Security Logic • Enforcement logic resides inside database and is schema-bound to the table it protects providing greater security. Reduced application maintenance and complexity ...
... • Compatible with RLS in other leading products Centralized Security Logic • Enforcement logic resides inside database and is schema-bound to the table it protects providing greater security. Reduced application maintenance and complexity ...
Object - NCNU Moodle 課程
... used in e-commerce • XML was developed because of need for data exchange between organizations and inability of HTML to specify structure and meaning of data ...
... used in e-commerce • XML was developed because of need for data exchange between organizations and inability of HTML to specify structure and meaning of data ...
database systems: dis 308
... Databases are part of our day to day lives. When we are registering as students, we are interacting with databases, when we go to the bank, pay our electricity bills or pay water bills our accounts are on a database, even when we are browsing the net; information is coming from several databases. Th ...
... Databases are part of our day to day lives. When we are registering as students, we are interacting with databases, when we go to the bank, pay our electricity bills or pay water bills our accounts are on a database, even when we are browsing the net; information is coming from several databases. Th ...
Database Security - Department of Computer Science
... Note: String values must be single quoted in SQL, so application provides this for each passed string parameter Expecting one row to be returned if success, no rows if failure Common variant – SELECT COUNT(*) FROM … ...
... Note: String values must be single quoted in SQL, so application provides this for each passed string parameter Expecting one row to be returned if success, no rows if failure Common variant – SELECT COUNT(*) FROM … ...
The POOL relational abstraction layer and the - Indico
... – For every object I/O operation the client has to supply: • the corresponding SEAL dictionary for the object's class • the object/relational mapping • the “persistent address” (eg. the value of the primary key in the table corresponding to the object's class) ...
... – For every object I/O operation the client has to supply: • the corresponding SEAL dictionary for the object's class • the object/relational mapping • the “persistent address” (eg. the value of the primary key in the table corresponding to the object's class) ...