OLeary2011Comp_PPT_Ch12
... • Integrated file collection for one person usually under the person’s direct control • Generally stored on the user’s hard-disk drive or on a LAN file server ...
... • Integrated file collection for one person usually under the person’s direct control • Generally stored on the user’s hard-disk drive or on a LAN file server ...
UML Specification for Data Modeling
... The Object Model An object model contains classes. Classes define the structure and behavior of a set of objects, sometimes called objects instances. The structure is represented as attributes (data values) and associations (relationships between classes). ...
... The Object Model An object model contains classes. Classes define the structure and behavior of a set of objects, sometimes called objects instances. The structure is represented as attributes (data values) and associations (relationships between classes). ...
Locks and Concurrency
... o READ COMMITTED - Specifies that shared locks are held while the data is being read to avoid dirty reads, but the data can be changed before the end of the transaction, resulting in nonrepeatable reads or phantom data. This option is the SQL Server default. o READ UNCOMMITTED - Implements dirty rea ...
... o READ COMMITTED - Specifies that shared locks are held while the data is being read to avoid dirty reads, but the data can be changed before the end of the transaction, resulting in nonrepeatable reads or phantom data. This option is the SQL Server default. o READ UNCOMMITTED - Implements dirty rea ...
What is AutoCAD?
... • AutoCAD run under MS-DOS and was also on UNIX and Apple Macintosh. • Since its release of first version in 1982 it was supported by only Microsoft Windows. • Then from oct.15 2010 AutoCAD for Mac.os x was also available. ...
... • AutoCAD run under MS-DOS and was also on UNIX and Apple Macintosh. • Since its release of first version in 1982 it was supported by only Microsoft Windows. • Then from oct.15 2010 AutoCAD for Mac.os x was also available. ...
Chapter 12
... Can I really create databases with spreadsheet software? • You can use spreadsheet software to maintain files of information • You cannot use it to join files or tables together to create a relational database • You can use the Form View feature in spreadsheet software to view each row as a “card” ...
... Can I really create databases with spreadsheet software? • You can use spreadsheet software to maintain files of information • You cannot use it to join files or tables together to create a relational database • You can use the Form View feature in spreadsheet software to view each row as a “card” ...
... Main purpose is to provide Session instances Created during application start up and kept for later use. You would need one SessionFactory object per database using a separate configuration file. So if you are using multiple databases then you would have to create multiple SessionFactory objects. ...
Chapter 14
... Rule 2. Primary Key Integrity. The primary key value cannot be null (empty). Each record must have a value for the primary key field. Rule 3. Domain Integrity. The field values must be from a predefined domain. For example, the Date field must have a date and not any other values (Validation Rule). ...
... Rule 2. Primary Key Integrity. The primary key value cannot be null (empty). Each record must have a value for the primary key field. Rule 3. Domain Integrity. The field values must be from a predefined domain. For example, the Date field must have a date and not any other values (Validation Rule). ...
Transparent Object Persistence
... ١٫٢ Current Techniques for Persistence Persistence requires the storage of object state for future retrieval. Various underlying mechanisms are in use in the industry, but by far the most common approach is to use a relational database management system (RDBMS) accessed through a combination of JDBC ...
... ١٫٢ Current Techniques for Persistence Persistence requires the storage of object state for future retrieval. Various underlying mechanisms are in use in the industry, but by far the most common approach is to use a relational database management system (RDBMS) accessed through a combination of JDBC ...
No Slide Title
... • Traversal path not known in DB.tree (depth first search) • Data for the first nodes prefetched in Tree.add ...
... • Traversal path not known in DB.tree (depth first search) • Data for the first nodes prefetched in Tree.add ...
while new - UHasselt
... • There is a PTIME BGS-program that outputs: – true on every In with n even; – false odd. (Just construct all red subsets of even size.) Theorem: There is no such PSPACE whilenewprogram (let alone PTIME). ...
... • There is a PTIME BGS-program that outputs: – true on every In with n even; – false odd. (Just construct all red subsets of even size.) Theorem: There is no such PSPACE whilenewprogram (let alone PTIME). ...
Probabilistic Data Management
... queries, inconsistent data, misaligned schemas, etc. The quest to manage imprecisions = major driving force in the database community • Ultimate driver for many research areas: data mining, semistructured data, schema matching, NN queries Thesis: A large class of data imprecisions can be effectively ...
... queries, inconsistent data, misaligned schemas, etc. The quest to manage imprecisions = major driving force in the database community • Ultimate driver for many research areas: data mining, semistructured data, schema matching, NN queries Thesis: A large class of data imprecisions can be effectively ...
A Database Interface for Clustering in Large Spatial Databases1
... electrostatic charge. While non-spatial attributes usually have atomar values, the values of spatial attributes often have an extension in space. Both the number and the size of spatial databases are rapidly growing because of the large amount of data obtained from satellite images, X-ray crystallog ...
... electrostatic charge. While non-spatial attributes usually have atomar values, the values of spatial attributes often have an extension in space. Both the number and the size of spatial databases are rapidly growing because of the large amount of data obtained from satellite images, X-ray crystallog ...
SQL Server 2008 adds support for lax validation to the XML Schema
... 3. Make necessary modifications to the application. 4. Drop the CDC schema using DROP SCHEMA. ...
... 3. Make necessary modifications to the application. 4. Drop the CDC schema using DROP SCHEMA. ...
ppt
... Multi-target searching One user interface; one search different platforms (UNIX, NT, IBM etc.) different database systems (relational, network) different database models Searching based on abstract concepts “Title”, i.e. not database columns Can combine results from diverse dbases Common ...
... Multi-target searching One user interface; one search different platforms (UNIX, NT, IBM etc.) different database systems (relational, network) different database models Searching based on abstract concepts “Title”, i.e. not database columns Can combine results from diverse dbases Common ...
Evolution of the Configuration Database Design
... Early prototyping could answer a lot of questions, but five years of experience count too Use different implementations for clients with ...
... Early prototyping could answer a lot of questions, but five years of experience count too Use different implementations for clients with ...
The essence of data normalization is to spit the data into several
... Primary key is a column or set of columns that identifies particular column. A primary key can point to more than one object. One draw back of the class diagram that they can become large& hard to fit all information on one page. 7. Data engine responsible for sorting, retrieving and update the data ...
... Primary key is a column or set of columns that identifies particular column. A primary key can point to more than one object. One draw back of the class diagram that they can become large& hard to fit all information on one page. 7. Data engine responsible for sorting, retrieving and update the data ...
Data integration mediation system “ … The mountain is a mountain
... Mediators perform ``mediation'' between applications and databases. Mediators are software modules that occupy an explicit, active layer between an end user application and the data sources the application is accessing. In this way, the Mediator forms a distinct middle layer, making user application ...
... Mediators perform ``mediation'' between applications and databases. Mediators are software modules that occupy an explicit, active layer between an end user application and the data sources the application is accessing. In this way, the Mediator forms a distinct middle layer, making user application ...
A Universal Relation Database Interface for Knowledge Based
... During the last years, database research has mainly been focused on different kinds of special database structures-semantical, deductive, or object-oriented databases, for example. However, large amounts of data have already been stored in traditional databases. In this paper we present a tool that ...
... During the last years, database research has mainly been focused on different kinds of special database structures-semantical, deductive, or object-oriented databases, for example. However, large amounts of data have already been stored in traditional databases. In this paper we present a tool that ...
Entity Framework
... Use the generated code You should place the EDM and therefore the generated code in a class library (dll-assembly). Then you can access the EDM from your data-tier, business-tier, persistent-tier, etc. When you access from another assembly remember to add a reference to your EDM assembly and to sys ...
... Use the generated code You should place the EDM and therefore the generated code in a class library (dll-assembly). Then you can access the EDM from your data-tier, business-tier, persistent-tier, etc. When you access from another assembly remember to add a reference to your EDM assembly and to sys ...
Why JPA? Java Persistence Architecture 13/05/2014 • All our programs need to store data in
... @Table (name=…) (the table name is different from the class name; it is …; well MySQL is case sensitive; it wouldn’t recognise Babynames) @XmlRootElement (haven’t a clue – something I haven’t read up on yet) @NamedQueries (these are defining JPQL’s version of prepared statements ...
... @Table (name=…) (the table name is different from the class name; it is …; well MySQL is case sensitive; it wouldn’t recognise Babynames) @XmlRootElement (haven’t a clue – something I haven’t read up on yet) @NamedQueries (these are defining JPQL’s version of prepared statements ...
Indexing Temporal Data with Virtual Structure
... number of spatio-temporal applications interest in the field of temporal databases has increased significantly with contributions from many researchers [1], [8]. Because temporal databases are in general append only, they are usually very large in size, thus efficient access method is even more impo ...
... number of spatio-temporal applications interest in the field of temporal databases has increased significantly with contributions from many researchers [1], [8]. Because temporal databases are in general append only, they are usually very large in size, thus efficient access method is even more impo ...
distributed_db_arch
... Can have each division, department or office hold its own data with some degree of autonomy ...
... Can have each division, department or office hold its own data with some degree of autonomy ...
Indexing Temporal Data with Virtual Structure
... number of spatio-temporal applications interest in the field of temporal databases has increased significantly with contributions from many researchers [1], [8]. Because temporal databases are in general append only, they are usually very large in size, thus efficient access method is even more impo ...
... number of spatio-temporal applications interest in the field of temporal databases has increased significantly with contributions from many researchers [1], [8]. Because temporal databases are in general append only, they are usually very large in size, thus efficient access method is even more impo ...
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.