slides in pdf - Università degli Studi di Milano
... Subset function: finds all the candidates contained in a transaction ...
... Subset function: finds all the candidates contained in a transaction ...
Reactor For ColdFusion - Frameworks Conference
... A typical query is only a few lines of code. Adding CFCs into the mix adds a lot of extra CFML ...
... A typical query is only a few lines of code. Adding CFCs into the mix adds a lot of extra CFML ...
Towards Representation Independent Similarity Search Over Graph
... from the two entities [5]. Figure 1a shows fragments of IMDb (imdb.com), which contains information about movies, actors, and characters. IMDb represents relationship between a character, its movie, and the actor who played the character by connecting these entities through some edges. Assume that a ...
... from the two entities [5]. Figure 1a shows fragments of IMDb (imdb.com), which contains information about movies, actors, and characters. IMDb represents relationship between a character, its movie, and the actor who played the character by connecting these entities through some edges. Assume that a ...
XZ-Ordering: A Space-Filling Curve for Objects with Spatial Extension
... corresponding update to the relational database must be aborted. For this purpose, a distributed commit protocol for heterogeneous database systems must be implemented, a time-consuming task which requires a deep knowledge of the participating systems. The hybrid solution involves further problems. ...
... corresponding update to the relational database must be aborted. For this purpose, a distributed commit protocol for heterogeneous database systems must be implemented, a time-consuming task which requires a deep knowledge of the participating systems. The hybrid solution involves further problems. ...
Sample Resume (5+)
... Handled Performance Tuning and Optimization, with strong analytical and troubleshooting skills for quick issue resolution in large-scale production environments located globally. Involved in gathering business requirements from clients about the credentials needed to access their servers, firewall s ...
... Handled Performance Tuning and Optimization, with strong analytical and troubleshooting skills for quick issue resolution in large-scale production environments located globally. Involved in gathering business requirements from clients about the credentials needed to access their servers, firewall s ...
Syllabus
... OBJECTIVE: The objective of this lab is to make student learn techniques for attacking and writing C programs for various types of problems. The emphasis should be on writing correct and efficient programs in C. The programs should include all the ones suggested below but should not be limited to th ...
... OBJECTIVE: The objective of this lab is to make student learn techniques for attacking and writing C programs for various types of problems. The emphasis should be on writing correct and efficient programs in C. The programs should include all the ones suggested below but should not be limited to th ...
Conceptual Design Using the Entity-Relationship (ER) Model
... Depends upon the use we want to make of address information, and the semantics of the data: If we have several addresses per employee, address must be an entity (since attributes cannot be set-valued). ◆ If the structure (city, street, etc.) is important, e.g., we want to retrieve employees in a giv ...
... Depends upon the use we want to make of address information, and the semantics of the data: If we have several addresses per employee, address must be an entity (since attributes cannot be set-valued). ◆ If the structure (city, street, etc.) is important, e.g., we want to retrieve employees in a giv ...
Document
... The communication complexity is O(m) on the user side and O(n) on the server side. Hence the communication complexity is O(max(m,n)) ...
... The communication complexity is O(m) on the user side and O(n) on the server side. Hence the communication complexity is O(max(m,n)) ...
The SQL Query Language COS 597A: Principles of Database and Information Systems
... The cross-product of from-list is computed, tuples that fail qualification are discarded, `unnecessary’ attributes are deleted, and the remaining tuples are partitioned into groups by the value of attributes in grouping-list. The group-qualification is then applied to eliminate some groups. Expressi ...
... The cross-product of from-list is computed, tuples that fail qualification are discarded, `unnecessary’ attributes are deleted, and the remaining tuples are partitioned into groups by the value of attributes in grouping-list. The group-qualification is then applied to eliminate some groups. Expressi ...
OnLine Analytical Problem (OLAP)
... That’s why pre-aggregation is valuable because the dimensions of the cube can be hierarchal. For example time can be divided into half years, quarters, months and days. Predefining such hierarchal relations allows for smooth drilling down and pre-aggregation. ...
... That’s why pre-aggregation is valuable because the dimensions of the cube can be hierarchal. For example time can be divided into half years, quarters, months and days. Predefining such hierarchal relations allows for smooth drilling down and pre-aggregation. ...
CSc-340 04a
... Carry out actions as part of the update methods instead of through a trigger Risk of unintended execution of triggers, for example, when loading data from a backup copy replicating updates at a remote site (Trigger execution can be disabled before such actions) Other risks with triggers: E ...
... Carry out actions as part of the update methods instead of through a trigger Risk of unintended execution of triggers, for example, when loading data from a backup copy replicating updates at a remote site (Trigger execution can be disabled before such actions) Other risks with triggers: E ...
More slides on Databases
... A relational database consists of tables that store records of a system The database is manipulated through SQL, the underlying query and manipulation language of relational databases SELECT statements carry out queries INSERT, UPDATE, and DELETE statements affect the database ...
... A relational database consists of tables that store records of a system The database is manipulated through SQL, the underlying query and manipulation language of relational databases SELECT statements carry out queries INSERT, UPDATE, and DELETE statements affect the database ...
Solutions
... • As tempfiles aren't checkpointed, we don't need to back them up. We can recreate them at any point after the database has been restored, recovered and opened • Temporary datafiles that belong to locally managed temporary tablespaces are automatically re-created during database recovery. This elimi ...
... • As tempfiles aren't checkpointed, we don't need to back them up. We can recreate them at any point after the database has been restored, recovered and opened • Temporary datafiles that belong to locally managed temporary tablespaces are automatically re-created during database recovery. This elimi ...
Database Regression Testing made easy with DbFit. Colin Moore-Hill
... What! Test the Database? Why? That’s what DBA’s are for !! DBA’s, no more than Developers, are human and prone to error and while the examples shown later on are quite simple, some SQL queries and commands can be programmed in themselves. Having a simple repeatable test requiring little programming ...
... What! Test the Database? Why? That’s what DBA’s are for !! DBA’s, no more than Developers, are human and prone to error and while the examples shown later on are quite simple, some SQL queries and commands can be programmed in themselves. Having a simple repeatable test requiring little programming ...
Physical Database Design and Performance (Significant Concepts)
... The Data Volume Statistics represent size of the business and should be calculated assuming business growth over at least a several year period. The Access Frequencies are estimated from the timing of events, transaction volumes, the number of concurrent users, and reporting and querying activities. ...
... The Data Volume Statistics represent size of the business and should be calculated assuming business growth over at least a several year period. The Access Frequencies are estimated from the timing of events, transaction volumes, the number of concurrent users, and reporting and querying activities. ...
Overview and History of Databases and Transactions
... the enterprise, a "transaction" is executed to cause the corresponding change in the database state With an on-line database, the event causes the transaction to be executed in real time A transaction is an application program with special properties (i.e., ACID=Atomicity, Consistency, Isolation ...
... the enterprise, a "transaction" is executed to cause the corresponding change in the database state With an on-line database, the event causes the transaction to be executed in real time A transaction is an application program with special properties (i.e., ACID=Atomicity, Consistency, Isolation ...
Visual Basic Database Access
... • DataReader: It is a read-only and forward-only pointer into a table to retrieve records. • DataSet Object: A DataSet object can hold several tables and relationships between tables. • DataAdapter: This the object used to pass data between the database and the dataset. ...
... • DataReader: It is a read-only and forward-only pointer into a table to retrieve records. • DataSet Object: A DataSet object can hold several tables and relationships between tables. • DataAdapter: This the object used to pass data between the database and the dataset. ...
Hit Ratios (JL Comp) - JL Computer Consultancy
... Once upon a time, when Oracle databases were very small, computer memory was very expensive, and discs were very slow, a wise old bird invented the cache hit ratio as a method of measuring one aspect of the performance of an Oracle database system. There were a number of minor variations in the form ...
... Once upon a time, when Oracle databases were very small, computer memory was very expensive, and discs were very slow, a wise old bird invented the cache hit ratio as a method of measuring one aspect of the performance of an Oracle database system. There were a number of minor variations in the form ...
Chapter 7 -- Managing Data Resources
... • What are the business benefits of providing a Web interface for the Bankbook Reconstruct application? • What value does this application provide the company and its customers? ...
... • What are the business benefits of providing a Web interface for the Bankbook Reconstruct application? • What value does this application provide the company and its customers? ...