R - CSE, IIT Bombay
... All database provide ways to view query execution plans E.g. in PostgreSQL, prefix an SQL query with the keyword explain to ...
... All database provide ways to view query execution plans E.g. in PostgreSQL, prefix an SQL query with the keyword explain to ...
Chapter 16: Concurrency Control Lock-Based Protocols Lock
... ! Unlocking may occur earlier in the tree-locking protocol than in the two-phase locking protocol. ! shorter waiting times, and increase in concurrency ! protocol is deadlock-free, no rollbacks are required ! the abort of a transaction can still lead to cascading rollbacks. (this correction has to b ...
... ! Unlocking may occur earlier in the tree-locking protocol than in the two-phase locking protocol. ! shorter waiting times, and increase in concurrency ! protocol is deadlock-free, no rollbacks are required ! the abort of a transaction can still lead to cascading rollbacks. (this correction has to b ...
Class.forName(“sun.jdbc.odbc.JdbcOdbcDriver”)
... In a Type 3 driver, a three-tier approach is used to access databases. The JDBC clients use standard network sockets to communicate with a middleware application server. The socket information is then translated by the middleware application server into the call format required by the DBMS, and forw ...
... In a Type 3 driver, a three-tier approach is used to access databases. The JDBC clients use standard network sockets to communicate with a middleware application server. The socket information is then translated by the middleware application server into the call format required by the DBMS, and forw ...
16.1: JDBC: 16.2: JDBC Architecture:
... 2. The Middleware Server (Can be a fully fledged J2EE Application server) can provide typical middleware services like caching (connections, query results, and so on), load balancing, logging, auditing etc.. 3. Can be used in internet since there is no client side software needed. 4. This driver is ...
... 2. The Middleware Server (Can be a fully fledged J2EE Application server) can provide typical middleware services like caching (connections, query results, and so on), load balancing, logging, auditing etc.. 3. Can be used in internet since there is no client side software needed. 4. This driver is ...
CODESOFT Tutorial
... Databases allow you to store data. All data is organized into two-dimensional tables in what is called a relationship. Each row in a table is called a record. The purpose of a record is to manage an object, the properties of which are organized across the different columns of the table in the form o ...
... Databases allow you to store data. All data is organized into two-dimensional tables in what is called a relationship. Each row in a table is called a record. The purpose of a record is to manage an object, the properties of which are organized across the different columns of the table in the form o ...
Evaluation of Alternative
... investigating the use of relational databases to build inverted index-based information retrieval systems. There are several key advantages to such an approach. A pure relational implementation using standard SQL offers portability across multiple hardware platforms, OS, and database vendors. Such a ...
... investigating the use of relational databases to build inverted index-based information retrieval systems. There are several key advantages to such an approach. A pure relational implementation using standard SQL offers portability across multiple hardware platforms, OS, and database vendors. Such a ...
DATABASE SCHEMA INTEGRATION PROCESS
... In [8], the authors present methods for the analysis and design of cooperative object-oriented information systems. A model of information system is split into several subsystems that can be handled more easily. Interrelationships existing between such subsystems require that the development methods ...
... In [8], the authors present methods for the analysis and design of cooperative object-oriented information systems. A model of information system is split into several subsystems that can be handled more easily. Interrelationships existing between such subsystems require that the development methods ...
LABELVIEW 2015 Tutorial
... In this chapter we are going to link a label (the container) with a database (the content). To do this, we will use ODBC (Open DataBase Connectivity) or OLE DB connections. Databases allow you to store data. All data is organized into two-dimensional tables in what is called a relationship. Each row ...
... In this chapter we are going to link a label (the container) with a database (the content). To do this, we will use ODBC (Open DataBase Connectivity) or OLE DB connections. Databases allow you to store data. All data is organized into two-dimensional tables in what is called a relationship. Each row ...
Object Database Semantics: the Stack
... An interface from a PL to SBQL in the style of ODBC/JDBC A generic gateway from SBQL to libraries written in other languages Generic middleware based e.g. on CORBA or Web Services Generic middleware based on a virtual repository ...
... An interface from a PL to SBQL in the style of ODBC/JDBC A generic gateway from SBQL to libraries written in other languages Generic middleware based e.g. on CORBA or Web Services Generic middleware based on a virtual repository ...
JDBC (Java DataBase Connectivity)
... API for interacting with your database server. For example, using JDBC drivers enable you to open database connections and to interact with it by sending SQL or database commands then receiving results with Java. The Java.sql package that ships with JDK contains various classes with their behaviors ...
... API for interacting with your database server. For example, using JDBC drivers enable you to open database connections and to interact with it by sending SQL or database commands then receiving results with Java. The Java.sql package that ships with JDK contains various classes with their behaviors ...
III SIP2
... • Does not itself interface directly with payment systems (e.g. credit card) – you have to write that bit • Susceptible to record-locking problems ...
... • Does not itself interface directly with payment systems (e.g. credit card) – you have to write that bit • Susceptible to record-locking problems ...
VI-Attached Database Storage - Purdue University :: Computer
... commodity PC consisting of a collection of low–cost disks, large memory, a VI–enabled network interface, and one or more processors. V3 is designed as a new generation database storage product and, as such, addresses issues dealing with reliability, fault-tolerance, and scalability that would not ne ...
... commodity PC consisting of a collection of low–cost disks, large memory, a VI–enabled network interface, and one or more processors. V3 is designed as a new generation database storage product and, as such, addresses issues dealing with reliability, fault-tolerance, and scalability that would not ne ...
Chapter 4.1-4.2, 4.5.2, 8.6
... where loan.loan_number = borrower.loan_number and borrower.customer_name = depositor.customer_name and depositor.account_number = account.account_number and account.balance >= 1000))) ...
... where loan.loan_number = borrower.loan_number and borrower.customer_name = depositor.customer_name and depositor.account_number = account.account_number and account.balance >= 1000))) ...
dbq - gaby.de
... the name without the extension, or if another extension is used, they may be entered within quotes, whereupon this is used as the full name. Database names cannot under most circumstances be entered as a string, and should always be entered as an identifier. A drive prefix can be put on any filename ...
... the name without the extension, or if another extension is used, they may be entered within quotes, whereupon this is used as the full name. Database names cannot under most circumstances be entered as a string, and should always be entered as an identifier. A drive prefix can be put on any filename ...
CHAPTER 10 More Complex Business Rules
... "MAN") can have a salary of less then $10,000 and that no other employee can have a salary of $10,000 or greater. This logic cannot be applied in setter methods for the following reasons: • For Salary alone, because it has to be applied when the users enter or change an employee's JobId. ...
... "MAN") can have a salary of less then $10,000 and that no other employee can have a salary of $10,000 or greater. This logic cannot be applied in setter methods for the following reasons: • For Salary alone, because it has to be applied when the users enter or change an employee's JobId. ...
MIS 301- Database
... Insertion–if new product is ordered for order 1007 of existing customer, customer data must be re-entered, causing duplication Deletion–if we delete the Dining Table from Order 1006, we lose information concerning this item's finish and price Update–changing the price of product ID 4 requires update ...
... Insertion–if new product is ordered for order 1007 of existing customer, customer data must be re-entered, causing duplication Deletion–if we delete the Dining Table from Order 1006, we lose information concerning this item's finish and price Update–changing the price of product ID 4 requires update ...
Using OCLC FirstSearch
... use the Suggest Best option to scan databases for your key search term/s. ...
... use the Suggest Best option to scan databases for your key search term/s. ...
SELECT CustomerName
... Example of View Creation From the University Database we can create a View called InstructorData that contains information about an Instructor and the Department the instructor is assigned to CREATE VIEW InstructorData AS SELECT ID,name,Instructor.dept_name,salary,building,budget FROM Instructor IN ...
... Example of View Creation From the University Database we can create a View called InstructorData that contains information about an Instructor and the Department the instructor is assigned to CREATE VIEW InstructorData AS SELECT ID,name,Instructor.dept_name,salary,building,budget FROM Instructor IN ...
Document
... • In our system, the proxy is placed in trusted domain to prevent CPAs. • We are still not clear if an attack happens to know some pairs of plaintexts and their indexes, what is the probability of obtaining plaintexts from other indexes. • But complex indexing programs can make it harder for perform ...
... • In our system, the proxy is placed in trusted domain to prevent CPAs. • We are still not clear if an attack happens to know some pairs of plaintexts and their indexes, what is the probability of obtaining plaintexts from other indexes. • But complex indexing programs can make it harder for perform ...
RETOO: Translating Relational to Object-Oriented
... which are sometimes not necessary. Stanisic focused his work not only on schema translation, but query translation as well (Stanisic , 1999). The transformed OO database schema by Stanisic is not semanticallyrich enough since it only supports two object-oriented concepts, which are inheritance and a ...
... which are sometimes not necessary. Stanisic focused his work not only on schema translation, but query translation as well (Stanisic , 1999). The transformed OO database schema by Stanisic is not semanticallyrich enough since it only supports two object-oriented concepts, which are inheritance and a ...
Slides
... • Transactions inside transactions; only commit when outermost transaction commits Triggers • Program automatically executed as a response to certain events in the database • Used instead of or after an INSERT, UPDATE, or DELETE operations on database tables CREATE OR REPLACE TRIGGER trigger_name BE ...
... • Transactions inside transactions; only commit when outermost transaction commits Triggers • Program automatically executed as a response to certain events in the database • Used instead of or after an INSERT, UPDATE, or DELETE operations on database tables CREATE OR REPLACE TRIGGER trigger_name BE ...
Data Concurrency and Consistency
... began. Therefore, a query never sees dirty data nor any of the changes made by transactions that commit during query execution. As query execution proceeds, only data committed before the query began is visible to the query. The query does not see changes committed after statement execution begins. ...
... began. Therefore, a query never sees dirty data nor any of the changes made by transactions that commit during query execution. As query execution proceeds, only data committed before the query began is visible to the query. The query does not see changes committed after statement execution begins. ...
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.