Chapter 4: Advanced SQL - United International College
... Program sends SQL commands to the database by using SQLExecDirect Result tuples are fetched using SQLFetch() SQLBindCol() binds C language variables to attributes of the query result ...
... Program sends SQL commands to the database by using SQLExecDirect Result tuples are fetched using SQLFetch() SQLBindCol() binds C language variables to attributes of the query result ...
Object-relational complex structures for XML storage
... XML data can be stored in various database repositories, including Object-Relational Database (ORDB). Using an ORDB, we get the benefit of the relational maturity and the richness of Object-Oriented modeling, including various complex data types. These data types resemble the true nature of XML data ...
... XML data can be stored in various database repositories, including Object-Relational Database (ORDB). Using an ORDB, we get the benefit of the relational maturity and the richness of Object-Oriented modeling, including various complex data types. These data types resemble the true nature of XML data ...
Document
... INSERTION : Enter new item with code 3945 and price 30.50 for which no order has been placed. Inserted tuple will have no values(i.e have to be left blank) for order no and order date DELETION: If order no1886 is deleted the fact that item code 4629 costs 20.25 is lost UPDATE: If price of item 4627 ...
... INSERTION : Enter new item with code 3945 and price 30.50 for which no order has been placed. Inserted tuple will have no values(i.e have to be left blank) for order no and order date DELETION: If order no1886 is deleted the fact that item code 4629 costs 20.25 is lost UPDATE: If price of item 4627 ...
LOGICAL DATABASE DESIGN Learning Units
... INSERTION : Enter new item with code 3945 and price 30.50 for which no order has been placed. Inserted tuple will have no values(i.e have to be left blank) for order no and order date DELETION: If order no1886 is deleted the fact that item code 4629 costs 20.25 is lost UPDATE: If price of item 4627 ...
... INSERTION : Enter new item with code 3945 and price 30.50 for which no order has been placed. Inserted tuple will have no values(i.e have to be left blank) for order no and order date DELETION: If order no1886 is deleted the fact that item code 4629 costs 20.25 is lost UPDATE: If price of item 4627 ...
Strong Types for Relational Data Stored in Databases or
... 06c61 for example, must be checked dynamically, unless we find a way of capturing these boundaries in its type. If c can be assigned type Probability rather than Real, the constraint would become checkable statically. In this report, we will investigate whether more precise types can be assigned to ...
... 06c61 for example, must be checked dynamically, unless we find a way of capturing these boundaries in its type. If c can be assigned type Probability rather than Real, the constraint would become checkable statically. In this report, we will investigate whether more precise types can be assigned to ...
Enabling Intensional Access Control via Preference
... object can be used to efficiently predict the elements that make up that object in a novel way. Towards investigating this theory, she will query a small database of radio telescope readings and the elements known to be found in those objects that is maintained by PIT (in a table called simply “radi ...
... object can be used to efficiently predict the elements that make up that object in a novel way. Towards investigating this theory, she will query a small database of radio telescope readings and the elements known to be found in those objects that is maintained by PIT (in a table called simply “radi ...
Fundamentals of Database Systems
... Whenever the owner A of a relation R grants a privilege on R to another account B, privilege can be given to B with or without the GRANT OPTION. If the GRANT OPTION is given, this means that B can also grant that privilege on R to other accounts. Suppose that B is given the GRANT OPTION by A and tha ...
... Whenever the owner A of a relation R grants a privilege on R to another account B, privilege can be given to B with or without the GRANT OPTION. If the GRANT OPTION is given, this means that B can also grant that privilege on R to other accounts. Suppose that B is given the GRANT OPTION by A and tha ...
www.adrem.ua.ac.be
... Both queries are single extensions of the key conjunctive query, and hence, they are generated within the same iteration. Obviously, Q2 is more general than Q1 , but still, both queries remain in the set of candidate queries. Moreover, it is necessary that both queries remain admissible, in order t ...
... Both queries are single extensions of the key conjunctive query, and hence, they are generated within the same iteration. Obviously, Q2 is more general than Q1 , but still, both queries remain in the set of candidate queries. Moreover, it is necessary that both queries remain admissible, in order t ...
November 28°, 2015
... Time Granularity: Determines the time interval at which runtime execution statistics data is aggregated into the query store. To optimize for space usage, the runtime execution statistics in the Runtime Stats Store are aggregated over a fixed time window. This fixed time window is configured via INT ...
... Time Granularity: Determines the time interval at which runtime execution statistics data is aggregated into the query store. To optimize for space usage, the runtime execution statistics in the Runtime Stats Store are aggregated over a fixed time window. This fixed time window is configured via INT ...
an introduction to deductive database and its query evalution
... such as PROLOG/DATALOG in which we specify what to achieve rather than how to achieve. Facts are specified in a manner similar to the way relations are specified but it does not include attribute names whereas rules are virtual relations (views in a relational database) that are not actually stored ...
... such as PROLOG/DATALOG in which we specify what to achieve rather than how to achieve. Facts are specified in a manner similar to the way relations are specified but it does not include attribute names whereas rules are virtual relations (views in a relational database) that are not actually stored ...
Part - Courses - University of California, Berkeley
... 1NF Storage Anomalies • Insertion: A new patient has not yet undergone surgery -- hence no surgeon # -- Since surgeon # is part of the key we can’t insert. • Insertion: If a surgeon is newly hired and hasn’t operated yet -- there will be no way to include that person in the database. • Update: If a ...
... 1NF Storage Anomalies • Insertion: A new patient has not yet undergone surgery -- hence no surgeon # -- Since surgeon # is part of the key we can’t insert. • Insertion: If a surgeon is newly hired and hasn’t operated yet -- there will be no way to include that person in the database. • Update: If a ...
Database Cracking
... In this paper, we explore a radically new approach in database architecture, called database cracking. The cracking approach is based on the hypothesis that index maintenance should be a byproduct of query processing, not of updates. Each query is interpreted not only as a request for a particular r ...
... In this paper, we explore a radically new approach in database architecture, called database cracking. The cracking approach is based on the hypothesis that index maintenance should be a byproduct of query processing, not of updates. Each query is interpreted not only as a request for a particular r ...
Joins and subqueries
... A subquery can be defined as a SELECT query that returns a single value Subqueries are nested within a SELECT, INSERT, UPDATE, or DELETE statement Subqueries can be used to retrieve data from multiple tables and can be used as an alternative to a join Subqueries can also be used inside the WHERE ...
... A subquery can be defined as a SELECT query that returns a single value Subqueries are nested within a SELECT, INSERT, UPDATE, or DELETE statement Subqueries can be used to retrieve data from multiple tables and can be used as an alternative to a join Subqueries can also be used inside the WHERE ...
Chapter 2: Relational Model
... ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
... ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
How to Implement FSQL and Priority Queries
... When we count the local satisfaction degree of each constraint many cases can appear. Our calculations are based on the surface intersection method for determining the compatibility of fuzzy sets. First, we will consider the case when in the condition a crisp attribute value appears e.g. "AGE=25". O ...
... When we count the local satisfaction degree of each constraint many cases can appear. Our calculations are based on the surface intersection method for determining the compatibility of fuzzy sets. First, we will consider the case when in the condition a crisp attribute value appears e.g. "AGE=25". O ...
View
... statement should only affect rows that meet a specified criterion. WHERE clauses are not mandatory clauses of SQL DML statements, but should be used to limit the number of rows affected by a SQL DML statement or returned by a query. WHERE is an SQL reserved word. EXAMPLE : SELECT * FROM student WHER ...
... statement should only affect rows that meet a specified criterion. WHERE clauses are not mandatory clauses of SQL DML statements, but should be used to limit the number of rows affected by a SQL DML statement or returned by a query. WHERE is an SQL reserved word. EXAMPLE : SELECT * FROM student WHER ...
Slide
... − SPARQL pattern match => calculate => generate pattern − Generate pattern more than a BGP (e.g. UNION) ...
... − SPARQL pattern match => calculate => generate pattern − Generate pattern more than a BGP (e.g. UNION) ...
Dynamic load balancing in parallel database systems
... Pipeline parallelism is typically used for inter-operator parallelism in order to overlap the execution of several operators within a query. Data parallelism, on the other hand, is applicable for both inter- and intra-operator parallelism and requires a data partitioning so that different (sub) oper ...
... Pipeline parallelism is typically used for inter-operator parallelism in order to overlap the execution of several operators within a query. Data parallelism, on the other hand, is applicable for both inter- and intra-operator parallelism and requires a data partitioning so that different (sub) oper ...
SELECT first_name, last_name, salary FROM employees a WHERE
... • Tables contain rows of data with a column for each datum. • Each column is of a specific data type • Columns without data are NULL • Each table has a primary key – a column that has unique values that identify rows • Columns may have foreign key references to a column in another table. The value i ...
... • Tables contain rows of data with a column for each datum. • Each column is of a specific data type • Columns without data are NULL • Each table has a primary key – a column that has unique values that identify rows • Columns may have foreign key references to a column in another table. The value i ...
Privacy-preserving Sanitization in Data Sharing
... destruction of the audit log in existing solutions, our framework allows to expire data at a fine granularity and supports audit queries on a database with incompleteness. Secondly, in the case of sharing the entire dataset, we solve the problem of untrusted system evaluation using released database ...
... destruction of the audit log in existing solutions, our framework allows to expire data at a fine granularity and supports audit queries on a database with incompleteness. Secondly, in the case of sharing the entire dataset, we solve the problem of untrusted system evaluation using released database ...