BCS THE CHARTERED INSTITUTE FOR IT DATABASE SYSTEMS BCS HIGHER EDUCATION QUALIFICATIONS
... marks. SECTION B Question 5 This was a popular question with 66% of candidates attempting it with 49% of attempts achieving pass level marks. SECTION B Question 6 This was a very popular question with 76% of candidates attempting it with 63% achieving pass level marks. ...
... marks. SECTION B Question 5 This was a popular question with 66% of candidates attempting it with 49% of attempts achieving pass level marks. SECTION B Question 6 This was a very popular question with 76% of candidates attempting it with 63% achieving pass level marks. ...
Valmart Management System CS387 : Databases and Information
... Since our model logically has different components, we felt providing an E/R diagram for each of the logical units mentioned below would be appropriate. We have therefore included an E/R model for the following components: ...
... Since our model logically has different components, we felt providing an E/R diagram for each of the logical units mentioned below would be appropriate. We have therefore included an E/R model for the following components: ...
Consistent Query Answering in Databases
... There are necessary and sufficient conditions for syntactic termination In the iteration process to determine Tω (Q) nothing syntactically new is obtained beyond some finite step There are sufficient conditions for semantic termination From some finite step on, only logically equivalent formulas are obtai ...
... There are necessary and sufficient conditions for syntactic termination In the iteration process to determine Tω (Q) nothing syntactically new is obtained beyond some finite step There are sufficient conditions for semantic termination From some finite step on, only logically equivalent formulas are obtai ...
Hibernate the Recursive Queries - Defining the Recursive Queries using Hibernate ORM
... listing). This node is called rcteTable and has up to three attributes: name used to define the actual name of the RCTE, max-level specifying recursion depth and an optional cycle attribute used to enable cycle protection if it is provided by DBMS vendor. The next node of the configuration document ...
... listing). This node is called rcteTable and has up to three attributes: name used to define the actual name of the RCTE, max-level specifying recursion depth and an optional cycle attribute used to enable cycle protection if it is provided by DBMS vendor. The next node of the configuration document ...
Creating a Data Warehouse using SQL Server
... assigned, apparently at random. In our interpretation a certain combination of payterms and a discounttype (with associated discount percentage) is given on every sale (e.g. invoice number) posing us with the problem of assigning deal_id's to the sales fact table. The best solution would appear to b ...
... assigned, apparently at random. In our interpretation a certain combination of payterms and a discounttype (with associated discount percentage) is given on every sale (e.g. invoice number) posing us with the problem of assigning deal_id's to the sales fact table. The best solution would appear to b ...
SQL Programming
... Web servers --- Connect users to the database, usually over the Internet, or possibly a local connection. ...
... Web servers --- Connect users to the database, usually over the Internet, or possibly a local connection. ...
PowerPoint
... •Guidelines for naming tables and the fields of the tables •What are the three relationships that may exist between tables and how they differ •How is a many-to-many relationship typically implemented in a database •The ERD representation of databases •How to form different queries in order to retri ...
... •Guidelines for naming tables and the fields of the tables •What are the three relationships that may exist between tables and how they differ •How is a many-to-many relationship typically implemented in a database •The ERD representation of databases •How to form different queries in order to retri ...
Database Concepts The Relational Model
... rows in a table. Second, it is used to represent rows in relationships. Third, most DBMS products use the values of the primary key to organize the storage of the relation. Finally, primary keys are used in indexes and other structures to improve performance for search operations. 81) Explain the co ...
... rows in a table. Second, it is used to represent rows in relationships. Third, most DBMS products use the values of the primary key to organize the storage of the relation. Finally, primary keys are used in indexes and other structures to improve performance for search operations. 81) Explain the co ...
Bulk-loading
... command, just as it is refused in a CREATE TABLE statement. However, sorted data can be obtained from a view, in the same way as any other table — as part of a query statement on that view. Nevertheless, some DBMS (such as Oracle Database) do not abide by this SQL standard restriction. A view is equ ...
... command, just as it is refused in a CREATE TABLE statement. However, sorted data can be obtained from a view, in the same way as any other table — as part of a query statement on that view. Nevertheless, some DBMS (such as Oracle Database) do not abide by this SQL standard restriction. A view is equ ...
IOSR Journal of Computer Engineering (IOSR-JCE)
... based on the norms of SQL. They work on the basis of Boolean interpretation of the queries: a logical expression is the only accepted selection criterion and the response always encompasses only these tuples for what the expression results in a true value. But some user requirements may not be answe ...
... based on the norms of SQL. They work on the basis of Boolean interpretation of the queries: a logical expression is the only accepted selection criterion and the response always encompasses only these tuples for what the expression results in a true value. But some user requirements may not be answe ...
“Candidate” Query
... Disclosures stemming from multiple query executions is not considered No use of outside knowledge to deduce information without detection Queries considered include – Joins and aggregation, but not nested subqueries ...
... Disclosures stemming from multiple query executions is not considered No use of outside knowledge to deduce information without detection Queries considered include – Joins and aggregation, but not nested subqueries ...
Fundamentals of Database Systems
... SALARY, SUPERVISOR_SSN ON EMPLOYEE FOR EACH ROW WHEN (NEW.SALARY> (SELECT SALARY FROM EMPLOYEE WHERE SSN=NEW.SUPERVISOR_SSN)) INFORM_SUPERVISOR (NEW.SUPERVISOR_SSN,NEW.SSN); ...
... SALARY, SUPERVISOR_SSN ON EMPLOYEE FOR EACH ROW WHEN (NEW.SALARY> (SELECT SALARY FROM EMPLOYEE WHERE SSN=NEW.SUPERVISOR_SSN)) INFORM_SUPERVISOR (NEW.SUPERVISOR_SSN,NEW.SSN); ...
branch-name
... involving the operation, +, –, , and /, and operating on constants or attributes of tuples. The query: select loan-number, branch-name, amount 100 from loan would return a relation which is the same as the loan relations, except that the attribute amount is multiplied by 100. ...
... involving the operation, +, –, , and /, and operating on constants or attributes of tuples. The query: select loan-number, branch-name, amount 100 from loan would return a relation which is the same as the loan relations, except that the attribute amount is multiplied by 100. ...
Queries
... – It can help users extract data, which meets the criteria defined by them, from a database file. – It must be written in a specific format. – Microsoft Access provides different tools to help users compose a query. – After a query is submitted, Microsoft Access looks up the database and displays th ...
... – It can help users extract data, which meets the criteria defined by them, from a database file. – It must be written in a specific format. – Microsoft Access provides different tools to help users compose a query. – After a query is submitted, Microsoft Access looks up the database and displays th ...
Entities - GTU Campus
... changing data, and usually have a large number of users who will be simultaneously performing transactions that change real-time data. Common examples of these types of databases are airline ticketing systems and banking transaction systems. The primary concerns in this type of application are con ...
... changing data, and usually have a large number of users who will be simultaneously performing transactions that change real-time data. Common examples of these types of databases are airline ticketing systems and banking transaction systems. The primary concerns in this type of application are con ...