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J2EE Technologies and Distributed Multi
... variables side of door which brings message to socket at receiving process ...
... variables side of door which brings message to socket at receiving process ...
Flexible Database Platform for Biomedical Research with Multiple
... The development of Qure Data Management platform began from designing the software solutions for the needs of the Estonian Genome Project [2]. This large-scale data collection activity to establish a new large-scale biobank required a software system to enable country-wide data collection. While des ...
... The development of Qure Data Management platform began from designing the software solutions for the needs of the Estonian Genome Project [2]. This large-scale data collection activity to establish a new large-scale biobank required a software system to enable country-wide data collection. While des ...
A System to Support Teaching and Learning Relational Database
... of relational algebra. The result of the evaluation of a physical plan is in general a multiset of records, which is the answer to the query. To make a physical plan more readable, it is usually given as a tree of physical operators. There are several teaching and learning tools for relational query ...
... of relational algebra. The result of the evaluation of a physical plan is in general a multiset of records, which is the answer to the query. To make a physical plan more readable, it is usually given as a tree of physical operators. There are several teaching and learning tools for relational query ...
you are transporting the tablespace set to a platform
... e.If the schema for a transported XMLType table is not present in the target database, it is imported and registered. If the schema already exists in the target databasean error is returned unless the ignore=y option is set. 5. Advanced Queues Transportable tablespaces do not support 8.0-compatible ...
... e.If the schema for a transported XMLType table is not present in the target database, it is imported and registered. If the schema already exists in the target databasean error is returned unless the ignore=y option is set. 5. Advanced Queues Transportable tablespaces do not support 8.0-compatible ...
Intro to XML
... transmitting/ expressing database views Document processing needs database processing for storing and manipulating data ...
... transmitting/ expressing database views Document processing needs database processing for storing and manipulating data ...
Chapter 5
... Data Models (cont.) Relational Model Most popular type of data model A relational model is based on relations A relation is a table that satisfies three criteria – Each cell in the table has one and only one value – Each row in a table is unique – All entries in a column must be of the same ...
... Data Models (cont.) Relational Model Most popular type of data model A relational model is based on relations A relation is a table that satisfies three criteria – Each cell in the table has one and only one value – Each row in a table is unique – All entries in a column must be of the same ...
Transactions
... consistent state—a new state if the transaction succeeded or, if the transaction failed, the same consistent state it was in before the transaction started. ...
... consistent state—a new state if the transaction succeeded or, if the transaction failed, the same consistent state it was in before the transaction started. ...
4 rel model
... • Conceptual model: In databases, structures are at a higher level. – Operations on data (Modifications and Queries) • Limited Operations: Ease of programmers and efficiency of database. – Constraints on data (what the data can be) ...
... • Conceptual model: In databases, structures are at a higher level. – Operations on data (Modifications and Queries) • Limited Operations: Ease of programmers and efficiency of database. – Constraints on data (what the data can be) ...
Relational Database Management Systems in the Cloud: Microsoft
... The performance of a relational database instance on Amazon EC2 depends on many factors, including the EC2 instance type, the number and configuration of EBS volumes, the configuration of the database software, and the application workload. We encourage users to benchmark their actual application on ...
... The performance of a relational database instance on Amazon EC2 depends on many factors, including the EC2 instance type, the number and configuration of EBS volumes, the configuration of the database software, and the application workload. We encourage users to benchmark their actual application on ...
$doc.title
... repositories and thus intuitively familiarize themselves with the logical patterns behind the SQL syntax. Despite their intuitive appeal, graphical representations are not always better [11] and despite much effort and many visual languages proposed [3], visual query languages never took the importa ...
... repositories and thus intuitively familiarize themselves with the logical patterns behind the SQL syntax. Despite their intuitive appeal, graphical representations are not always better [11] and despite much effort and many visual languages proposed [3], visual query languages never took the importa ...
Provenance Management in Databases Under Schema
... When the schema evolves, the database under old schema is migrated into the new one conforming to new schema. Therefore, the current database snapshot is the combined result of (i) the external actions that entered the original information (e.g., via SQL inserts or updates), and (ii) the migration s ...
... When the schema evolves, the database under old schema is migrated into the new one conforming to new schema. Therefore, the current database snapshot is the combined result of (i) the external actions that entered the original information (e.g., via SQL inserts or updates), and (ii) the migration s ...
Optimization_Lecture_7
... Searching for a record requires just a traversal from the root to the appropriate leaf node. The length of the path from the root to a leaf is called height of the tree (usually 2 or 3). To search for entry 9*, we follow the left most child pointer from the root (as 9 < 10). Then at level two we fol ...
... Searching for a record requires just a traversal from the root to the appropriate leaf node. The length of the path from the root to a leaf is called height of the tree (usually 2 or 3). To search for entry 9*, we follow the left most child pointer from the root (as 9 < 10). Then at level two we fol ...
Chapter 15
... To preserve integrity of data, the database system must ensure: Atomicity: Either all operations of the transaction are properly reflected in the database or none are. Consistency: Execution of a transaction in isolation preserves the consistency of the database. Isolation: Each transaction mu ...
... To preserve integrity of data, the database system must ensure: Atomicity: Either all operations of the transaction are properly reflected in the database or none are. Consistency: Execution of a transaction in isolation preserves the consistency of the database. Isolation: Each transaction mu ...
- Lorentz Center
... • Between hybs normalisation: – Every time that two or more different chips are going to be compared, it’s necessary that all of them are centered and scaled – Normalisation should be made taking into account the experimental design; error model must include distinction between experimental units, b ...
... • Between hybs normalisation: – Every time that two or more different chips are going to be compared, it’s necessary that all of them are centered and scaled – Normalisation should be made taking into account the experimental design; error model must include distinction between experimental units, b ...
Object-Oriented DBMS
... declarative access to object database using SQL-like syntax. Does not provide explicit update operators leaves this to operations defined on object types. Can be used as a standalone language and as a language embedded in another language, for which an ODMG binding is defined (Smalltalk, C++, an ...
... declarative access to object database using SQL-like syntax. Does not provide explicit update operators leaves this to operations defined on object types. Can be used as a standalone language and as a language embedded in another language, for which an ODMG binding is defined (Smalltalk, C++, an ...
Coordinating Peer-to-Peer Information Sources
... Each database DBi: its language Li, with a set Ai of unary predicates for Attributes, a set of constant symbols DOMi for Elements, a set of predicates Ri for Relations Take a set of such DBi, i in I Define Domain relation rij as a subset of DOMi x DOMj. rij is the set of pairs where, ...
... Each database DBi: its language Li, with a set Ai of unary predicates for Attributes, a set of constant symbols DOMi for Elements, a set of predicates Ri for Relations Take a set of such DBi, i in I Define Domain relation rij as a subset of DOMi x DOMj. rij is the set of pairs
(A) write_item (B)
... Page 5 (old) Page 1 Page 4 Page 2 (old) Page 3 Page 6 Page 2 (new) Page 5 (new) ...
... Page 5 (old) Page 1 Page 4 Page 2 (old) Page 3 Page 6 Page 2 (new) Page 5 (new) ...
Chapter 7: Relational Database Design
... values. The domain declaration A dom requires that the A value of all tuples be values in dom. Key declaration. Let R be a relation schema with K R. The key declaration key (K) requires that K be a superkey for schema R (K R). All key declarations are functional dependencies but not all func ...
... values. The domain declaration A dom requires that the A value of all tuples be values in dom. Key declaration. Let R be a relation schema with K R. The key declaration key (K) requires that K be a superkey for schema R (K R). All key declarations are functional dependencies but not all func ...
Semantic data integrity
... relationships between tables RI guarantees that an acceptable value is always in the foreign key column. The ANSI SQL-92 standard defines four possible referential actions that apply to deletes from or updates to the referenced table. NO ACTION, CASCADE, SET DEFAULT, and ...
... relationships between tables RI guarantees that an acceptable value is always in the foreign key column. The ANSI SQL-92 standard defines four possible referential actions that apply to deletes from or updates to the referenced table. NO ACTION, CASCADE, SET DEFAULT, and ...
Relational Databases vs Non-Relational Databases vs
... Your data is non-relational/semi-structured Your team will be trained in these new technologies (NoSQL) You have enough information to correctly select the type and product of NoSQL for your situation You can relax transactional consistency when scalability or performance is more important You can s ...
... Your data is non-relational/semi-structured Your team will be trained in these new technologies (NoSQL) You have enough information to correctly select the type and product of NoSQL for your situation You can relax transactional consistency when scalability or performance is more important You can s ...
Powerpoint - SQL Saturday
... sp_query_store_remove_plan = delete specific plan and associated runtime stats sp_query_store_remove_query = delete query, associated query text, plans and runtime stats sp_query_store_reset_exec_stats = Delete runtime stats for specific plan ...
... sp_query_store_remove_plan = delete specific plan and associated runtime stats sp_query_store_remove_query = delete query, associated query text, plans and runtime stats sp_query_store_reset_exec_stats = Delete runtime stats for specific plan ...
Presentation
... advise technology users to select only those vendors with the highest ratings. Gartner research publications consist of the opinions of Gartner's research organization and should not be construed as statements of fact. Gartner disclaims all warranties, expressed or implied, with respect to this rese ...
... advise technology users to select only those vendors with the highest ratings. Gartner research publications consist of the opinions of Gartner's research organization and should not be construed as statements of fact. Gartner disclaims all warranties, expressed or implied, with respect to this rese ...
Data Stream Management Systems - Department of Information
... DSMSs vs. relational databases • Often very high stream data volume and rate – Regular DBs much less demanding – Regular database are optimized for high-watermark • Once loaded it does not change in size very fast – Streams may have extreme insert and delete rates as tuples flow through the DSMS ...
... DSMSs vs. relational databases • Often very high stream data volume and rate – Regular DBs much less demanding – Regular database are optimized for high-watermark • Once loaded it does not change in size very fast – Streams may have extreme insert and delete rates as tuples flow through the DSMS ...
Discovery and Maintenance of Functional Dependencies by Independencies
... use a top-down search approach. They check the validity of a dependencyby searching for FIs in the negative cover. Also, the negative cover is not complete regarding a classical consequence relation. Schlimmeralso uses a top-down approach, but in conjunction with a hash-function in order to avoid re ...
... use a top-down search approach. They check the validity of a dependencyby searching for FIs in the negative cover. Also, the negative cover is not complete regarding a classical consequence relation. Schlimmeralso uses a top-down approach, but in conjunction with a hash-function in order to avoid re ...
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 ...
Versant Object Database
![](https://commons.wikimedia.org/wiki/Special:FilePath/Versant_logo_2007.png?width=300)
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.