The Entity-Relationship - Department of Computer Science
... – What information about these entities and relationships should we store in the database (i.e., attributes)? – What are the integrity constraints or business rules that ...
... – What information about these entities and relationships should we store in the database (i.e., attributes)? – What are the integrity constraints or business rules that ...
Ray Williams` slides
... Note there is a current controversy where Progress Software and NuSphere Corporation have set up another site http://www.mysql.org in violation of the MySQL Copyright ...
... Note there is a current controversy where Progress Software and NuSphere Corporation have set up another site http://www.mysql.org in violation of the MySQL Copyright ...
Database Theory - Binus Repository
... – Conceptual (high-level, semantic) data models: Provide concepts that are close to the way many users perceive data. (Also called entity-based or object-based data models) – Physical (low-level, internal) data models: Provide concepts that describe the details of how data is stored in the computer. ...
... – Conceptual (high-level, semantic) data models: Provide concepts that are close to the way many users perceive data. (Also called entity-based or object-based data models) – Physical (low-level, internal) data models: Provide concepts that describe the details of how data is stored in the computer. ...
ReadMe_ 6.3.1-TIV-ITM_MSAPP-FP0008
... Additional Information: After failure of one of the query which gets the list of deleted tables, collector didn’t remove the deleted tables from global map and at the same time new tables entries were added to this map in every new interval. This was leading to high memory usage. To fix this made fo ...
... Additional Information: After failure of one of the query which gets the list of deleted tables, collector didn’t remove the deleted tables from global map and at the same time new tables entries were added to this map in every new interval. This was leading to high memory usage. To fix this made fo ...
Chapter 22
... of statistical rules and patterns from Large databases. A data warehouse archives information gathered from multiple sources, and stores it under a unified schema, at a single site. Important for large businesses which generate data from multiple divisions, possibly at multiple sites Data may ...
... of statistical rules and patterns from Large databases. A data warehouse archives information gathered from multiple sources, and stores it under a unified schema, at a single site. Important for large businesses which generate data from multiple divisions, possibly at multiple sites Data may ...
Chapter 4: SQL
... Types and domains are similar. Domains can have constraints, such as not null, specified on them. E.g. create domain person_name char(20) not null v.s. create string person_name char(20); ...
... Types and domains are similar. Domains can have constraints, such as not null, specified on them. E.g. create domain person_name char(20) not null v.s. create string person_name char(20); ...
The Relational Data Model and Relational Database Constraints
... 3.1 Relational Model Concepts The relational model represents the database as a collection of relations. Informally, each relation resembles a table of values or, to some extent, a flat file of records. It is called a flat file because each record has a simple linear or flat structure. For example, ...
... 3.1 Relational Model Concepts The relational model represents the database as a collection of relations. Informally, each relation resembles a table of values or, to some extent, a flat file of records. It is called a flat file because each record has a simple linear or flat structure. For example, ...
Slide 1
... V8. It will still be in CM when migration job DSNTIJTC has completed. No new function can be executed in CM. Data sharing systems can have V8 and V9 members in this mode. DB2 can only migrate to CM from V8 NFM. ...
... V8. It will still be in CM when migration job DSNTIJTC has completed. No new function can be executed in CM. Data sharing systems can have V8 and V9 members in this mode. DB2 can only migrate to CM from V8 NFM. ...
Microsoft SQL Server 2008 Product Overview
... Integrated Full-Text Search Integrated Full-Text Search makes the transition between Full-Text Search and relational data seamless, while enabling the use of full-text indexes to perform high-speed text searches on large text columns. Sparse Columns This feature provides a highly efficient way of m ...
... Integrated Full-Text Search Integrated Full-Text Search makes the transition between Full-Text Search and relational data seamless, while enabling the use of full-text indexes to perform high-speed text searches on large text columns. Sparse Columns This feature provides a highly efficient way of m ...
MYCH3
... In logic, we can introduce names to denote entities. In object-oriented models, we can have object IDs. In the relational model, primary keys play the role of names of entities. Base tables define names for entities. E.g. student ids in Students. Foreign keys point to names defined by other tables ...
... In logic, we can introduce names to denote entities. In object-oriented models, we can have object IDs. In the relational model, primary keys play the role of names of entities. Base tables define names for entities. E.g. student ids in Students. Foreign keys point to names defined by other tables ...
Living with P6 Databases, Part 2
... a few SQL commands. Oracle says that the instructions apply to P6 Version 7 and later, so Version 6 users may not be able to use these suggestions. P6’s ‘undo’ information is contained in the referential delete table, REFRDEL. This information can grow to be quite large and can be truncated to free ...
... a few SQL commands. Oracle says that the instructions apply to P6 Version 7 and later, so Version 6 users may not be able to use these suggestions. P6’s ‘undo’ information is contained in the referential delete table, REFRDEL. This information can grow to be quite large and can be truncated to free ...
Chapter 4: SQL
... compare images for similarity. Some database systems support table-valued functions, which can return a relation as a result. SQL:1999 also supports a rich set of imperative constructs, including Loops, if-then-else, assignment Many databases have proprietary procedural extensions to SQL that di ...
... compare images for similarity. Some database systems support table-valued functions, which can return a relation as a result. SQL:1999 also supports a rich set of imperative constructs, including Loops, if-then-else, assignment Many databases have proprietary procedural extensions to SQL that di ...
PhysDBStor - Microsoft Center
... This physical storage design guide is written to help database architects and administrators configure Microsoft SQL Server 2005 systems for optimal I/O performance and space utilization. This article also emphasizes the new SQL Server 2005 features that are significant to these discussions. This pa ...
... This physical storage design guide is written to help database architects and administrators configure Microsoft SQL Server 2005 systems for optimal I/O performance and space utilization. This article also emphasizes the new SQL Server 2005 features that are significant to these discussions. This pa ...
Spatial Data Storage and Topology in the Redesigned MAF/TIGER
... hardware, and require proprietary data update and access tools, as well as separate archiving, system maintenance, and tuning. For many organizations, GIS projects represent a major integration challenge consuming a large portion of the IT budget. Much of this is directed towards integration between ...
... hardware, and require proprietary data update and access tools, as well as separate archiving, system maintenance, and tuning. For many organizations, GIS projects represent a major integration challenge consuming a large portion of the IT budget. Much of this is directed towards integration between ...
Project
... within that data. A simple example of a visualisation tool is the job list within CCP4i - this shows some basic attributes of each job within a project and allows the user to interact with the database by selecting jobs and then performing operations such as listing and viewing the associated input ...
... within that data. A simple example of a visualisation tool is the job list within CCP4i - this shows some basic attributes of each job within a project and allows the user to interact with the database by selecting jobs and then performing operations such as listing and viewing the associated input ...
![[Powerpoint] - SQLSaturday489_Sql_Server_Migration](http://s1.studyres.com/store/data/002835087_1-6f7a97bff585384c97c616385da19cd5-300x300.png)
[Powerpoint] - SQLSaturday489_Sql_Server_Migration
... ➤ Third-party applications may not be compatible with SQL Server ➤ Embedded and dynamic SQL code has to be migrated manually ➤ Applications may require new drivers/connectors ➤ Scope of database migration project can be quite large ➤ Migration effort can include thousands of database objects and lin ...
... ➤ Third-party applications may not be compatible with SQL Server ➤ Embedded and dynamic SQL code has to be migrated manually ➤ Applications may require new drivers/connectors ➤ Scope of database migration project can be quite large ➤ Migration effort can include thousands of database objects and lin ...
Lecture 5 - Wojciech Bieniecki
... Type 1 drivers are translating JDBC on ODBC and are using ODBC driver to connect with database. JDK provides only one type of this driver: JDBC/ODBC bridge Type 2 drivers has been written partly in JAVA and partly in their platform source code. In communication process they are using client programm ...
... Type 1 drivers are translating JDBC on ODBC and are using ODBC driver to connect with database. JDK provides only one type of this driver: JDBC/ODBC bridge Type 2 drivers has been written partly in JAVA and partly in their platform source code. In communication process they are using client programm ...
entity set
... • An entity set that does not have a primary key is referred to as a weak entity set. • The existence of a weak entity set depends on the existence of a identifying entity set – It must relate to the identifying entity set via a total, one-to-many relationship set from the identifying to the weak en ...
... • An entity set that does not have a primary key is referred to as a weak entity set. • The existence of a weak entity set depends on the existence of a identifying entity set – It must relate to the identifying entity set via a total, one-to-many relationship set from the identifying to the weak en ...
ER Model
... • An entity set that does not have a primary key is referred to as a weak entity set. • The existence of a weak entity set depends on the existence of a identifying entity set – It must relate to the identifying entity set via a total, one-to-many relationship set from the identifying to the weak en ...
... • An entity set that does not have a primary key is referred to as a weak entity set. • The existence of a weak entity set depends on the existence of a identifying entity set – It must relate to the identifying entity set via a total, one-to-many relationship set from the identifying to the weak en ...
www.cs.laurentian.ca
... Other operations drill across: executes queries involving (across) more than one fact table drill through: the bottom level of a data cube to its back-end relational tables (using SQL) Ranking the top N or bottom N items in lists, computing averages, growth rates, interests, internal rates of ...
... Other operations drill across: executes queries involving (across) more than one fact table drill through: the bottom level of a data cube to its back-end relational tables (using SQL) Ranking the top N or bottom N items in lists, computing averages, growth rates, interests, internal rates of ...
lecture 15
... If you say 1:1, then only the current marriage for people is of interest in your miniworld. A recursive 1:1 relationship allows two entities of the same entity set to be related, but a given entity can only be related to one other entity. Consider the following figure, where we illustrate 5 persons ...
... If you say 1:1, then only the current marriage for people is of interest in your miniworld. A recursive 1:1 relationship allows two entities of the same entity set to be related, but a given entity can only be related to one other entity. Consider the following figure, where we illustrate 5 persons ...