ppt
... Hard deadline – Serious problems may occur if task is not completed within deadline Firm deadline - The task has zero value if it completed after the deadline. Soft deadline - The task has diminishing value if it is completed after the deadline. The wide variance of execution times for read ...
... Hard deadline – Serious problems may occur if task is not completed within deadline Firm deadline - The task has zero value if it completed after the deadline. Soft deadline - The task has diminishing value if it is completed after the deadline. The wide variance of execution times for read ...
4. Intermediate SQL
... course_id varchar (8), sec_id varchar (8), semester varchar (6), year numeric (4,0), building varchar (15), room_number varchar (7), time slot id varchar (4), primary key (course_id, sec_id, semester, year), check (semester in (’Fall’, ’Winter’, ’Spring’, ’Summer’)) ...
... course_id varchar (8), sec_id varchar (8), semester varchar (6), year numeric (4,0), building varchar (15), room_number varchar (7), time slot id varchar (4), primary key (course_id, sec_id, semester, year), check (semester in (’Fall’, ’Winter’, ’Spring’, ’Summer’)) ...
Oracle 9i to Oracle 10g Upgrade Guide
... server machine has 4 GB of physical memory. If you have more than 4 GB, this value should be adjusted so that it is greater than or equal to half the server's physical memory. Otherwise, the Oracle installer will issue a warning. ...
... server machine has 4 GB of physical memory. If you have more than 4 GB, this value should be adjusted so that it is greater than or equal to half the server's physical memory. Otherwise, the Oracle installer will issue a warning. ...
Implementing
... indexes, distribution of queries among tables, and the query performance in the workload will be analyzed For a small set of problem queries, the way to tune the database will be recommended It will specify the advanced options such as disk space constraints that can be customized SQL/Lesson 7/S ...
... indexes, distribution of queries among tables, and the query performance in the workload will be analyzed For a small set of problem queries, the way to tune the database will be recommended It will specify the advanced options such as disk space constraints that can be customized SQL/Lesson 7/S ...
Connecting to a database with JDBC
... it the various SQL statements. 2. The manager should communicate with the various third-party drivers that actually connect to the database and return the information from the query or perform the action specified by the query. ...
... it the various SQL statements. 2. The manager should communicate with the various third-party drivers that actually connect to the database and return the information from the query or perform the action specified by the query. ...
SQL Queries - EECS: www-inst.eecs.berkeley.edu
... Special return value when all tuples have been retrieved. • ORDER BY allows control over the order in which tuples are ...
... Special return value when all tuples have been retrieved. • ORDER BY allows control over the order in which tuples are ...
SQL Server 2000: Permissions on System Tables
... instance, a user has been placed in a role and that role has been given permissions to execute a set of five stored procedures. However, what usually isn’t documented is what rights the user has because of the public role, a role all users who have the ability to access the database belong to. Withi ...
... instance, a user has been placed in a role and that role has been given permissions to execute a set of five stored procedures. However, what usually isn’t documented is what rights the user has because of the public role, a role all users who have the ability to access the database belong to. Withi ...
Chapter 1
... processing, and user interfaces are divided into separate areas that are fairly independent of one another ...
... processing, and user interfaces are divided into separate areas that are fairly independent of one another ...
data source
... – This characteristic overcomes a major disadvantage of ODBC. – With ODBC, a vendor must create an ODBC driver for almost all DBMS features and functions in order to participate in ODBC at ...
... – This characteristic overcomes a major disadvantage of ODBC. – With ODBC, a vendor must create an ODBC driver for almost all DBMS features and functions in order to participate in ODBC at ...
Nessun titolo diapositiva
... • A contribution to “data quality” • An element in the design process (we will discuss “normal forms”) • Used by the system in choosing the strategy for query processing Note: • it is not the case that all properties can be described by means of integrity constraints ...
... • A contribution to “data quality” • An element in the design process (we will discuss “normal forms”) • Used by the system in choosing the strategy for query processing Note: • it is not the case that all properties can be described by means of integrity constraints ...
Practical Relational Database Design
... Here is an informal, but complete, description of what is a relational schema of one relation We want to define a structure for some table 1. We give it a name (we had S) 2. We chose the number of columns (we had 2) and give them distinct names (we had A and B) 3. We decide on the domains of ele ...
... Here is an informal, but complete, description of what is a relational schema of one relation We want to define a structure for some table 1. We give it a name (we had S) 2. We chose the number of columns (we had 2) and give them distinct names (we had A and B) 3. We decide on the domains of ele ...
5.3 Domain Constraint Experiments - Computer Science
... 8.3 Overall Evaluation of the Integrity .............................................................................................. 67 8.4 Suitable Environment for Each .................................................................................................... 68 8.4.1 Advantages of each ...
... 8.3 Overall Evaluation of the Integrity .............................................................................................. 67 8.4 Suitable Environment for Each .................................................................................................... 68 8.4.1 Advantages of each ...
Here - NYU Computer Science Department
... • Each such operation takes time linear in the number of levels of the tree (which is between log3N and log2N; so we write: O(log N). We show by example of an insertion ...
... • Each such operation takes time linear in the number of levels of the tree (which is between log3N and log2N; so we write: O(log N). We show by example of an insertion ...
Presentation
... Defined in the ATLAS technical proposal as the component that “archives information about the ...
... Defined in the ATLAS technical proposal as the component that “archives information about the ...
No Slide Title - Department of Computer Science
... 3.Know the basis of the mathematical relation and the properties of a relation. Understand and recognize symbols for Selection, projection, Cartesian product, union and set difference. Understand the difference between an inner join and an outerjoin 4.Know the characteristics of superkey, candidate ...
... 3.Know the basis of the mathematical relation and the properties of a relation. Understand and recognize symbols for Selection, projection, Cartesian product, union and set difference. Understand the difference between an inner join and an outerjoin 4.Know the characteristics of superkey, candidate ...
Progressive Optimization in a Shared-Nothing
... join strategies used by the optimizer. Details of this novel placement strategy are discussed in a later section. The coordinator then translates the augmented access plan to a low-level QEP and distributes it to subordinator sites for parallel execution. During query compilation, the solution also ...
... join strategies used by the optimizer. Details of this novel placement strategy are discussed in a later section. The coordinator then translates the augmented access plan to a low-level QEP and distributes it to subordinator sites for parallel execution. During query compilation, the solution also ...
Understanding Semantic Relationships
... the database design process, among which are SECSI (Systrme en Conception de Systrme d'Informations; Bouzeghoub et al., 1985); the View Creation System (Storey, 1988; Storey and Goldstein, 1988; 1990a; 1990b; AVIS (Automated View Integration System; Wagner, 1989); OICSI (Rolland and Proix, 1986; Cau ...
... the database design process, among which are SECSI (Systrme en Conception de Systrme d'Informations; Bouzeghoub et al., 1985); the View Creation System (Storey, 1988; Storey and Goldstein, 1988; 1990a; 1990b; AVIS (Automated View Integration System; Wagner, 1989); OICSI (Rolland and Proix, 1986; Cau ...
Data - DWH Community
... The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The d ...
... The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The d ...
Weak Entity Sets
... (customer-id, account-number) is the super key of depositor NOTE: this means a pair of entity sets can have at most one relationship in a particular relationship set. E.g. if we wish to track all access-dates to each account by each ...
... (customer-id, account-number) is the super key of depositor NOTE: this means a pair of entity sets can have at most one relationship in a particular relationship set. E.g. if we wish to track all access-dates to each account by each ...
