List of features implemented in Sculptor 6 SQL
... Stored procedures metadata Keyed file: procedures ...
... Stored procedures metadata Keyed file: procedures ...
슬라이드 1 - Pusan
... Hash-Join Algorithm The hash-join of r and s is computed as follows. 1. Partition the relation s using hashing function h. When partitioning a relation, one block of memory is reserved as the output buffer for each partition. 2. Partition r similarly. 3. For each i: (a) Load si into memory and build ...
... Hash-Join Algorithm The hash-join of r and s is computed as follows. 1. Partition the relation s using hashing function h. When partitioning a relation, one block of memory is reserved as the output buffer for each partition. 2. Partition r similarly. 3. For each i: (a) Load si into memory and build ...
Chapter 10 Review Questions and Answers
... Click the plus sign to expand the subdatasheet for a record. d) How is a displayed subdatasheet removed from view? A plus sign changes to a minus sign when a subdatasheet is displayed. Click the minus sign to remove the subdatasheet. 11. a) What is a select query? A select query is a database object ...
... Click the plus sign to expand the subdatasheet for a record. d) How is a displayed subdatasheet removed from view? A plus sign changes to a minus sign when a subdatasheet is displayed. Click the minus sign to remove the subdatasheet. 11. a) What is a select query? A select query is a database object ...
Chapter 8
... JOIN USING Clause • Returns only rows with matching values in the column indicated in the USING clause • Syntax: SELECT column-list FROM table1 JOIN table2 USING (common-column) ...
... JOIN USING Clause • Returns only rows with matching values in the column indicated in the USING clause • Syntax: SELECT column-list FROM table1 JOIN table2 USING (common-column) ...
Chapter 6
... Built-in Functions and Grouping GROUP BY allows a column and a built-in function to be used together GROUP BY sorts the table by the named column and applies the built-in function to groups of rows having the same value of the named column WHERE condition must be applied before GROUP BY phras ...
... Built-in Functions and Grouping GROUP BY allows a column and a built-in function to be used together GROUP BY sorts the table by the named column and applies the built-in function to groups of rows having the same value of the named column WHERE condition must be applied before GROUP BY phras ...
Hybrid Row-Column Partitioning in Teradata
... a multitier partitioning mechanism. The first tier of partitioning is implicit. It establishes the distribution of data across AMPs. It is determined based on whether a table has a Primary Index (PI), Primary AMP Index (PA), or no Primary Index (NoPI). A table with either a PI or PA is partitioned o ...
... a multitier partitioning mechanism. The first tier of partitioning is implicit. It establishes the distribution of data across AMPs. It is determined based on whether a table has a Primary Index (PI), Primary AMP Index (PA), or no Primary Index (NoPI). A table with either a PI or PA is partitioned o ...
Notes
... • deduct from one account and credit to another If one steps succeeds and the other fails, database is in an inconsistent state Therefore, either both steps should succeed or neither should ...
... • deduct from one account and credit to another If one steps succeeds and the other fails, database is in an inconsistent state Therefore, either both steps should succeed or neither should ...
Chapter 8 - cda college
... JOIN ON Clause • Used when tables have no common attributes • Returns only rows that meet the join condition – Typically includes equality comparison expression of two columns ...
... JOIN ON Clause • Used when tables have no common attributes • Returns only rows that meet the join condition – Typically includes equality comparison expression of two columns ...
LABSHEET 1: creating a table, primary keys and data types
... 5. Close the “Supplier” tab. Then type “SELECT * FROM Supplier;” in the “Query 1” window and click the “Execute” button: . You can see that the query returns all data contained in the Supplier table. See Figure 9. ...
... 5. Close the “Supplier” tab. Then type “SELECT * FROM Supplier;” in the “Query 1” window and click the “Execute” button: . You can see that the query returns all data contained in the Supplier table. See Figure 9. ...
Databases: Design, Implementation, and Management
... • To insert null value for a column, specify only the other columns or write null as the value • Can specify values for some columns, in any order, as long as values match order ...
... • To insert null value for a column, specify only the other columns or write null as the value • Can specify values for some columns, in any order, as long as values match order ...
create table - NCNU Moodle 課程
... • Compound conditions are formed by combining simple conditions using either or both of the following operators: AND and OR • Sorting is accomplished using ORDER BY clause • When the data is sorted in more than one field, can have a major and minor sort key • Grouping: use the GROUP BY clause • HAVI ...
... • Compound conditions are formed by combining simple conditions using either or both of the following operators: AND and OR • Sorting is accomplished using ORDER BY clause • When the data is sorted in more than one field, can have a major and minor sort key • Grouping: use the GROUP BY clause • HAVI ...
Chapter 3
... Compound Conditions (continued) Preceding a condition by NOT operator Reverses the truth or falsity of the original condition ...
... Compound Conditions (continued) Preceding a condition by NOT operator Reverses the truth or falsity of the original condition ...
Chapter 3
... • Compound conditions are formed by combining simple conditions using either or both of the following operators: AND and OR • Sorting is accomplished using ORDER BY clause • When the data is sorted in more than one field, can have a major and minor sort key • Grouping: use the GROUP BY clause • HAVI ...
... • Compound conditions are formed by combining simple conditions using either or both of the following operators: AND and OR • Sorting is accomplished using ORDER BY clause • When the data is sorted in more than one field, can have a major and minor sort key • Grouping: use the GROUP BY clause • HAVI ...
Document
... i.e. A data dictionary is a file that contains “Metadata” i.e. , “data about data” Classification of sql statement All sql statement are instruction to the database only. And that is where it differs from generalpurpose programming languages like ‘C’ or ‘c++’ or ’BASIC’ etc ...
... i.e. A data dictionary is a file that contains “Metadata” i.e. , “data about data” Classification of sql statement All sql statement are instruction to the database only. And that is where it differs from generalpurpose programming languages like ‘C’ or ‘c++’ or ’BASIC’ etc ...
No Slide Title
... Query building/ DB browsing tool, supporting SQL Server, MySQL, Oracle, PostgreSQL, SyBase, DB2, Informix, any ...
... Query building/ DB browsing tool, supporting SQL Server, MySQL, Oracle, PostgreSQL, SyBase, DB2, Informix, any ...
course, period
... Why must this be run AFTER INSERT? Why not BEFORE? Because there is a foreign key constraint from GivenCourses to Courses, and until we have inserted the row into Courses, there would be nothing for the new row in GivenCourses to refer to. ...
... Why must this be run AFTER INSERT? Why not BEFORE? Because there is a foreign key constraint from GivenCourses to Courses, and until we have inserted the row into Courses, there would be nothing for the new row in GivenCourses to refer to. ...
Advanced SQL
... Outer joins are often used in database maintenance to find rows that do not have matching values in common columns. Null values appear in columns where there is no match between tables. Explain the processing order of a correlated subquery. Correlated subqueries use the result of the outer query to ...
... Outer joins are often used in database maintenance to find rows that do not have matching values in common columns. Null values appear in columns where there is no match between tables. Explain the processing order of a correlated subquery. Correlated subqueries use the result of the outer query to ...
Chapter 10 Databases
... (C) A user tries to enter a record in the table Countries with the same primary key as another record. (D) A user tries to request a joined table using the SQL language. C 18. The Rule of Referential Integrity insists that each value in the foreign key must also appear in the primary key of the othe ...
... (C) A user tries to enter a record in the table Countries with the same primary key as another record. (D) A user tries to request a joined table using the SQL language. C 18. The Rule of Referential Integrity insists that each value in the foreign key must also appear in the primary key of the othe ...
Presentation
... • Initially coming from the (p*time) row store • Row-oriented and literal-based • Does not operate on value IDs ...
... • Initially coming from the (p*time) row store • Row-oriented and literal-based • Does not operate on value IDs ...
Relationships - Programajama!
... But let's say the only reason I need to do this, to keep track of driver's license data is so I can associate a license with an employee for making travel reservations. So, in this system that I'm describing, it's a pure one-to-one relationship. One employee row points to one driver's license row. T ...
... But let's say the only reason I need to do this, to keep track of driver's license data is so I can associate a license with an employee for making travel reservations. So, in this system that I'm describing, it's a pure one-to-one relationship. One employee row points to one driver's license row. T ...
Structured Query Language (SQL)
... in the database and where the DDL part of the language is used to describe the type of data to be held by the database. SQL works with database programs like MS Access, DB2, Informix, MS SQL Server, Oracle, Sybase, etc. Unfortunately, there are many different versions of the SQL language, but to be ...
... in the database and where the DDL part of the language is used to describe the type of data to be held by the database. SQL works with database programs like MS Access, DB2, Informix, MS SQL Server, Oracle, Sybase, etc. Unfortunately, there are many different versions of the SQL language, but to be ...
Rows vs. Columns: Why Not Both?
... > Column partitions, each of which usually contains multiple physical rows > Columnar storage and autocompression implemented with a new physical row format column called a container > Row-storage implementation that may have physical rows with row format called a subrow ...
... > Column partitions, each of which usually contains multiple physical rows > Columnar storage and autocompression implemented with a new physical row format column called a container > Row-storage implementation that may have physical rows with row format called a subrow ...
Powering the Cloud with Oracle WebLogic
... – Not more than one manager per department alter table emp add constraint only_one_mgr_in_dept_uk unique (one_mgr_flag) alter table emp ADD ( one_mgr_flag as ( case when job ='MANAGER' then deptno end ...
... – Not more than one manager per department alter table emp add constraint only_one_mgr_in_dept_uk unique (one_mgr_flag) alter table emp ADD ( one_mgr_flag as ( case when job ='MANAGER' then deptno end ...
or more
... Uniqueness - No two tuples of the relation have the same values for the set of attributes forming the candidate key. Minimality - No attributes can be discarded from the candidate key without destroying the uniqueness property. ...
... Uniqueness - No two tuples of the relation have the same values for the set of attributes forming the candidate key. Minimality - No attributes can be discarded from the candidate key without destroying the uniqueness property. ...