Intro. to Data Access Classes and Persistence
... • Persistence can be achieved using sequential files, object serialization, or relational databases • A relational database is used to organize data into tables • In a relational database, each column represents a field and each row represents a record • SQL is a popular, standard language used to a ...
... • Persistence can be achieved using sequential files, object serialization, or relational databases • A relational database is used to organize data into tables • In a relational database, each column represents a field and each row represents a record • SQL is a popular, standard language used to a ...
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... Our second main motivating application for QueryViz is as teaching tool. We have observed that students often have difficulties understanding the logic behind correlated and uncorrelated nested queries. Whereas coding patterns are well-studied and known, this notion is not common for SQL. QueryViz a ...
... Our second main motivating application for QueryViz is as teaching tool. We have observed that students often have difficulties understanding the logic behind correlated and uncorrelated nested queries. Whereas coding patterns are well-studied and known, this notion is not common for SQL. QueryViz a ...
Document
... A transaction is structured such that its writes are all performed at the end of its processing All writes of a transaction form an atomic action; no transaction may execute while a transaction is being written A transaction that aborts is restarted with a new timestamp Solution 2: Limited f ...
... A transaction is structured such that its writes are all performed at the end of its processing All writes of a transaction form an atomic action; no transaction may execute while a transaction is being written A transaction that aborts is restarted with a new timestamp Solution 2: Limited f ...
Essbase Administration Services Developer`s Guide
... Administration Services works with Essbase Servers in a three-tiered system that consists of a client user interface, a middle-tier server, and one or more database servers (Essbase Servers). The middle tier coordinates interactions and resources between the user interface and Essbase Servers. The t ...
... Administration Services works with Essbase Servers in a three-tiered system that consists of a client user interface, a middle-tier server, and one or more database servers (Essbase Servers). The middle tier coordinates interactions and resources between the user interface and Essbase Servers. The t ...
Syllabus for CSE 2002 batch as Doc
... floating-point numbers and character. Hardware: Basic components of a digital computer; I/O unit, memory unit and CPU; peripheral devices. Single- and multi-user systems. Multitasking systems. Computer communication and networks. Computer Hardware Organization. Bus-organized architecture. CPU Organi ...
... floating-point numbers and character. Hardware: Basic components of a digital computer; I/O unit, memory unit and CPU; peripheral devices. Single- and multi-user systems. Multitasking systems. Computer communication and networks. Computer Hardware Organization. Bus-organized architecture. CPU Organi ...
Chapter 4
... – Redo log files keep list of DB changes – If DB loses changes, recovery process restores them – Redo log files receive the change information before the datafiles are updated – In minor failures (e.g., short power outage), redo log files are automatically checked during DB startup, and data is rest ...
... – Redo log files keep list of DB changes – If DB loses changes, recovery process restores them – Redo log files receive the change information before the datafiles are updated – In minor failures (e.g., short power outage), redo log files are automatically checked during DB startup, and data is rest ...
The following paper was originally published in the
... The main advantage is to require only the TCP/IP protocols running for using the solution. In addition, they do not demand privileged access on the remote hosts. However, it is very difficult and complex to work directly using the socket interface. Other approaches have used a combination of NIS and ...
... The main advantage is to require only the TCP/IP protocols running for using the solution. In addition, they do not demand privileged access on the remote hosts. However, it is very difficult and complex to work directly using the socket interface. Other approaches have used a combination of NIS and ...
Transactions Transactions Transaction Concept Example of Fund
... must equal value of cash-in-hand " A transaction must see a consistent database. " During transaction execution the database may be temporarily inconsistent. " When the transaction completes successfully the database must be ...
... must equal value of cash-in-hand " A transaction must see a consistent database. " During transaction execution the database may be temporarily inconsistent. " When the transaction completes successfully the database must be ...
Standard Query Language (SQL)
... SQL has gone through many standards: starting with SQL-86 or SQL 1.A. SQL-92 is referred to as SQL-2. Later standards (from SQL-1999) are divided into core specification and specialized extensions. The extensions are implemented for different applications – such as data mining, data warehousing, ...
... SQL has gone through many standards: starting with SQL-86 or SQL 1.A. SQL-92 is referred to as SQL-2. Later standards (from SQL-1999) are divided into core specification and specialized extensions. The extensions are implemented for different applications – such as data mining, data warehousing, ...
Optimization_Lecture_7
... Selection using Hash Index • For a general selection query: R.attr op value (R), hash index is best if R.attr is equality (=). It is not good for not equality (e.g. <, >, <>). • We retrieve the index page that contain the rids (record identifiers) of the qualifying tuples. • Then the pages that co ...
... Selection using Hash Index • For a general selection query: R.attr op value (R), hash index is best if R.attr is equality (=). It is not good for not equality (e.g. <, >, <>). • We retrieve the index page that contain the rids (record identifiers) of the qualifying tuples. • Then the pages that co ...
XML
... NO in-memory data structure to manipulate XML document inconvenient to handle complex operations ...
... NO in-memory data structure to manipulate XML document inconvenient to handle complex operations ...
OLAP Query Evaluation in a Database Cluster: a Performance Study
... A promising design scheme is physical partitioning [2]. It partitions the fact tables over different nodes, using the same attribute as partitioning criterion, and has replicas of the dimension tables at all nodes. Fact tables are by far the largest tables, so accessing these tables in parallel sho ...
... A promising design scheme is physical partitioning [2]. It partitions the fact tables over different nodes, using the same attribute as partitioning criterion, and has replicas of the dimension tables at all nodes. Fact tables are by far the largest tables, so accessing these tables in parallel sho ...
Weak Entity Sets
... for each component attribute E.g. given entity set customer with composite attribute name with component attributes first-name and last-name the table corresponding to the entity set has two attributes name.first-name and name.last-name A multivalued attribute M of an entity E is represented b ...
... for each component attribute E.g. given entity set customer with composite attribute name with component attributes first-name and last-name the table corresponding to the entity set has two attributes name.first-name and name.last-name A multivalued attribute M of an entity E is represented b ...
Chapter 14: Concurrency Control
... Then Tj must abort; if Tj had been allowed to commit earlier, the schedule is not recoverable. Further, any transaction that has read a data item written by Tj must ...
... Then Tj must abort; if Tj had been allowed to commit earlier, the schedule is not recoverable. Further, any transaction that has read a data item written by Tj must ...
11g Partitioning – New Features and Information Lifecycle
... product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features o ...
... product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features o ...
ppt - cse@IITB
... Then Tj must abort; if Tj had been allowed to commit earlier, the schedule is not recoverable. Further, any transaction that has read a data item written by Tj must ...
... Then Tj must abort; if Tj had been allowed to commit earlier, the schedule is not recoverable. Further, any transaction that has read a data item written by Tj must ...
DATA SOURCE AND RESOURCE REFERENCE SETTINGS
... Set the value of the MICROSOFT_JDBC_DRIVER_NATIVEPATH environment variable to the location of the x86 folder. Value: (Specifies the absolute path that the symbolic name represents) Description: (Specifies an optional description for your administrative records) ...
... Set the value of the MICROSOFT_JDBC_DRIVER_NATIVEPATH environment variable to the location of the x86 folder. Value: (Specifies the absolute path that the symbolic name represents) Description: (Specifies an optional description for your administrative records) ...
Network Safety of Computer
... One of the main characteristics of Flash 8 is its simplicity, the straightforwardness in its use allows to create animations in an effective and quick way. Let's suppose you want to create an animation in which a globe goes up and down. It may seem a job for long hours, but it is not as bad. Let's s ...
... One of the main characteristics of Flash 8 is its simplicity, the straightforwardness in its use allows to create animations in an effective and quick way. Let's suppose you want to create an animation in which a globe goes up and down. It may seem a job for long hours, but it is not as bad. Let's s ...
Querying the Uncertain Position of Moving Objects
... future time is de ned inductively as function of its values at previous times. The need for such a de nition will be be clear when we de ne database histories in the next subsection. Also, it is to be noted that the uncertainty in the possible value of a dynamic attribute is indicated by the fact th ...
... future time is de ned inductively as function of its values at previous times. The need for such a de nition will be be clear when we de ne database histories in the next subsection. Also, it is to be noted that the uncertainty in the possible value of a dynamic attribute is indicated by the fact th ...
Spatial Query Languages - Computer Science and Engineering
... SQL - General Information is a standard query language for relational databases It support logical data model concepts, such as relations, keys, ... Supported by major brands, e.g. IBM DB2, Oracle, MS SQL Server, Sybase, ... 3 versions: SQL1 (1986), SQL2 (1992), SQL 3 (1999) Can express common data ...
... SQL - General Information is a standard query language for relational databases It support logical data model concepts, such as relations, keys, ... Supported by major brands, e.g. IBM DB2, Oracle, MS SQL Server, Sybase, ... 3 versions: SQL1 (1986), SQL2 (1992), SQL 3 (1999) Can express common data ...