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Optimizing Web Applications to Perform Efficiently
... - For each Java class, number of objects, memory size in bytes, and fully qualified class names are printed. VM internal class names are printed with '*' prefix. This helps to find who is occupying the heap. - If the live suboption is specified, only live objects are counted Note - jmap –histo:live ...
... - For each Java class, number of objects, memory size in bytes, and fully qualified class names are printed. VM internal class names are printed with '*' prefix. This helps to find who is occupying the heap. - If the live suboption is specified, only live objects are counted Note - jmap –histo:live ...
Online transaction processing, or OLTP, refers to a class of systems
... scanner, or router. Each computer connected to the system can operate independently, but has the ability to communicate with other external devices and computers. REQUIREMENTS:Online transaction processing increasingly requires support for transactions that span a network and may include more than o ...
... scanner, or router. Each computer connected to the system can operate independently, but has the ability to communicate with other external devices and computers. REQUIREMENTS:Online transaction processing increasingly requires support for transactions that span a network and may include more than o ...
Andrew Sprague, Black Team - Computer Science
... publications and make any corrections that are required before sharing them to the public. Then the public may access and browse the publications using READ. READ is an online system that will collect and store information on the publications and the grants obtained by various authors. READ will acc ...
... publications and make any corrections that are required before sharing them to the public. Then the public may access and browse the publications using READ. READ is an online system that will collect and store information on the publications and the grants obtained by various authors. READ will acc ...
Chapter 1: Introduction - Internet Database Lab.
... Security mechanisms needed to ensure that malicious scripts do not cause ...
... Security mechanisms needed to ensure that malicious scripts do not cause ...
On the Information Content of Semi-Structured
... We establish the following results regarding the computational complexity of determining whether two databases are information-wise equivalent or inequivalent: 1. The problem of determining information-wise equivalence of flat databases can be solved in time polynomial in the size of the two databa ...
... We establish the following results regarding the computational complexity of determining whether two databases are information-wise equivalent or inequivalent: 1. The problem of determining information-wise equivalence of flat databases can be solved in time polynomial in the size of the two databa ...
transaction
... • Let T1 transfer $50 from A to B, and T2 transfer 10% of the balance from A to B. The following is a serial schedule, in which T1 is ...
... • Let T1 transfer $50 from A to B, and T2 transfer 10% of the balance from A to B. The following is a serial schedule, in which T1 is ...
Chapter 10
... • Transaction is logical unit of work that must be either entirely completed or aborted • Successful transaction changes database from one consistent state to another – One in which all data integrity constraints are satisfied ...
... • Transaction is logical unit of work that must be either entirely completed or aborted • Successful transaction changes database from one consistent state to another – One in which all data integrity constraints are satisfied ...
The Semantic Integration of Information Models
... used. Queries and updates can also be issued against a local view. In that case, they are rst translated into GCL and then into dierent DMLi and distributed to appropriate information resources. Thus, applications need not be modi ed to access the extra information that becomes available. To illus ...
... used. Queries and updates can also be issued against a local view. In that case, they are rst translated into GCL and then into dierent DMLi and distributed to appropriate information resources. Thus, applications need not be modi ed to access the extra information that becomes available. To illus ...
Elmasri/Navathe, Fundamentals of Database Systems, Fourth
... because of erroneous parameter values or because of a logical programming error. In addition, the user may interrupt the transaction during its execution. Elmasri/Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Ramez Elmasri and Shamkant Navathe ...
... because of erroneous parameter values or because of a logical programming error. In addition, the user may interrupt the transaction during its execution. Elmasri/Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Ramez Elmasri and Shamkant Navathe ...
5a-Hibernate
... "Hibernate is an object/relational mapping tool for Java environments. The term object/relational mapping (ORM) refers to the technique of mapping a data representation from an object model to a relational data model with a SQL-based schema." -- Preface Hibernate Documentation Hibernate supports man ...
... "Hibernate is an object/relational mapping tool for Java environments. The term object/relational mapping (ORM) refers to the technique of mapping a data representation from an object model to a relational data model with a SQL-based schema." -- Preface Hibernate Documentation Hibernate supports man ...
MYCH7 - Computing Science
... Client-Server Architectures Disadvantages of thick clients No central place to update the business logic Security issues: Server needs to trust clients • Access control and authentication needs to be managed at the server • Clients need to leave server database in consistent state • One possibi ...
... Client-Server Architectures Disadvantages of thick clients No central place to update the business logic Security issues: Server needs to trust clients • Access control and authentication needs to be managed at the server • Clients need to leave server database in consistent state • One possibi ...
A Comparison of SAS® Versus Microsoft® Excel and Access's Inbuilt VBA Functionality
... By default, Excel and Access are highly restrictive of custom VBA code, as it could accidentally (or deliberately) be used to modify or delete many files on the user¶s PC. We need to add an exception for each trusted source (i.e. per workbook or per database.) Clicking on the Excel Button Æ Excel Op ...
... By default, Excel and Access are highly restrictive of custom VBA code, as it could accidentally (or deliberately) be used to modify or delete many files on the user¶s PC. We need to add an exception for each trusted source (i.e. per workbook or per database.) Clicking on the Excel Button Æ Excel Op ...
cse4701chap26 - University of Connecticut
... data access is managed through a single conceptual schema. The degree of local autonomy is minimum. Each site must adhere to a centralized access policy There may be a global schema. Multi-database: There is no one conceptual global schema For data access a schema is constructed dynamically ...
... data access is managed through a single conceptual schema. The degree of local autonomy is minimum. Each site must adhere to a centralized access policy There may be a global schema. Multi-database: There is no one conceptual global schema For data access a schema is constructed dynamically ...
database - GCG-42
... • Each file is independent from one another. • Each file contains and processes information for one specific function, such as accounting or inventory. • Files are designed using programs written in programming languages such as COBOl,C,C++. • File systems may use a storage device such as hard disk ...
... • Each file is independent from one another. • Each file contains and processes information for one specific function, such as accounting or inventory. • Files are designed using programs written in programming languages such as COBOl,C,C++. • File systems may use a storage device such as hard disk ...
Computing Consistent Query Answers using Conflict
... queries [2, 12, 17] or cannot guarantee polynomial time computability of consistent query answers [3, 5, 11, 15, 19, 23]. The latter is due to the fact that those approaches rely on the computation of answers sets of logic programs with disjunction and negation – a Σp2 -complete problem. Only the ap ...
... queries [2, 12, 17] or cannot guarantee polynomial time computability of consistent query answers [3, 5, 11, 15, 19, 23]. The latter is due to the fact that those approaches rely on the computation of answers sets of logic programs with disjunction and negation – a Σp2 -complete problem. Only the ap ...
Course Name : Database Management Systems
... either does not supply the part or charges more than $200 for it, the part is not selected.) Write triggers to enforce the referential integrity constraint from section to time slot, on updates to section, and time slot. Note that the ones do not cover the update operation. L4 What is relational com ...
... either does not supply the part or charges more than $200 for it, the part is not selected.) Write triggers to enforce the referential integrity constraint from section to time slot, on updates to section, and time slot. Note that the ones do not cover the update operation. L4 What is relational com ...
11_dbimpl - University of Central Florida
... – Storing derived attributes is one of the most common means of improving processing efficiency – How many tables/row examinations are avoided by storing total grade points and total credit hours with the STUDENT entity? – What new operations must be introduced to keep the data current? – Explicitly ...
... – Storing derived attributes is one of the most common means of improving processing efficiency – How many tables/row examinations are avoided by storing total grade points and total credit hours with the STUDENT entity? – What new operations must be introduced to keep the data current? – Explicitly ...
Database Isolation Levels
... 2. While cursor A is executing and referencing row 2, transaction B cannot update or delete row 2, but can update and insert all other rows. 3. Transaction B can update row 2 as soon as cursor A releases row 2 given that it has not modified it. 4. If transaction A re-runs cursor A, there is no guar ...
... 2. While cursor A is executing and referencing row 2, transaction B cannot update or delete row 2, but can update and insert all other rows. 3. Transaction B can update row 2 as soon as cursor A releases row 2 given that it has not modified it. 4. If transaction A re-runs cursor A, there is no guar ...
PowerPoint Chapter 10
... • Transaction log keeps track of all transactions that modify database • Concurrency control coordinates simultaneous execution of transactions • Scheduler is responsible for establishing order in which concurrent transaction operations are executed ...
... • Transaction log keeps track of all transactions that modify database • Concurrency control coordinates simultaneous execution of transactions • Scheduler is responsible for establishing order in which concurrent transaction operations are executed ...
Access Pattern Confidentiality-Preserving - CEUR
... Oblivious RAM (ORAM) was first proposed by Goldreich and Ostrovsky as a way to ensure software protection [8]. ORAM prevents that an attacker who observes the RAM learns any information about the RAM access patterns of executed programs. Improved schemes were proposed over the last few years which h ...
... Oblivious RAM (ORAM) was first proposed by Goldreich and Ostrovsky as a way to ensure software protection [8]. ORAM prevents that an attacker who observes the RAM learns any information about the RAM access patterns of executed programs. Improved schemes were proposed over the last few years which h ...
Introduction to Database
... • The relationship type is modeled as the diamond and lines between entity types…the instance is between specific entity instances ...
... • The relationship type is modeled as the diamond and lines between entity types…the instance is between specific entity instances ...
TMs and ORBs - Microsoft Research
... services to certain user groups and that protects its resources by transactions. An example of a very important resource manager is a database system. rmCall: This is used as a generic call to any kind of resource manager. The call specifies the name of the resource manager, the operation that shoul ...
... services to certain user groups and that protects its resources by transactions. An example of a very important resource manager is a database system. rmCall: This is used as a generic call to any kind of resource manager. The call specifies the name of the resource manager, the operation that shoul ...
Scalable Query Result Caching for Web Applications
... providers. Our intent is for Ferdinand to improve the priceto-performance ratio in situations where additional database scalability is needed. To be practical for these scenarios Ferdinand is as transparent as possible to the web application and central database server. We do not require the web des ...
... providers. Our intent is for Ferdinand to improve the priceto-performance ratio in situations where additional database scalability is needed. To be practical for these scenarios Ferdinand is as transparent as possible to the web application and central database server. We do not require the web des ...
When to use Oracle Database In
... is to accelerate column-oriented data accesses made by analytics operations. It is similar in spirit to having a conventional index (for analytics) on every column in a table. However, it is much more lightweight than a conventional index, requiring no logging, or any writes to the database. Just as ...
... is to accelerate column-oriented data accesses made by analytics operations. It is similar in spirit to having a conventional index (for analytics) on every column in a table. However, it is much more lightweight than a conventional index, requiring no logging, or any writes to the database. Just as ...
Title Slide - Computer Science Department @ University of
... as a framework and a foundation for the efficient organisation and retrieval of large amounts of data. • To introduce you to some standard notations (for example, SQL and Tutorial D) that implement important parts of relational algebra. • To give students practical experience of the use and limitati ...
... as a framework and a foundation for the efficient organisation and retrieval of large amounts of data. • To introduce you to some standard notations (for example, SQL and Tutorial D) that implement important parts of relational algebra. • To give students practical experience of the use and limitati ...
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.