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Two or more tables which contains duplicate data is what kind of an example?
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Why are data tables useful to scientists?
Why are data tables useful to scientists? It is Important for scientist to use data because data is what they use to write their observation
What are two kinds of data tables that can be created?
one- input tables and three input tables
Why is a data table useful?
Data Tables are useful in science because data tables help you organize your observation and results. ME. Sophie. Got that right off of the book
What can graphs reveal that data tables cannot?
graph can reveal patterns or trend that words and date tables cannot -from derek
What is the meaning of normalized data in data warehouse?
Data warehouses are designed for quick access to large amounts of historical data. Read operations dominate over write operations. Under these conditions, normalization takes a back seat to performance optimization. A different design methodology, called dimensional design is used when planning a data warehouse. There are two common categories of schemas used in data warehousing: star schemas and snow flake schemas. A star schema has a central fact table, surrounded by dimension tables. The fact table contains columns called measures, which are aggregated in queries. The fact table is related to the dimension tables. The dimension tables may have levels, which are implemented as columns. For example, a dimension table named Location may contain columns for Continent, Country, StateProvince and City. This dimension table is not normalized. If you normalize the dimension tables, then each level is placed in its own table. Normalizing the dimension tables results in a snow flake schema.
How do you relate tables?
You can relate the data present in multiple tables by using the concept of Foreign Keys. for example if we have an employee database that contains various details of an employee scattered in multiple tables, one column in each table can be used to logically group the data in all these tables. For example, the employee number column in each of these tables can be used to relate the data present in these tables.
How do you related?
You can relate the data present in multiple tables by using the concept of Foreign Keys. for example if we have an employee database that contains various details of an employee scattered in multiple tables, one column in each table can be used to logically group the data in all these tables. For example, the employee number column in each of these tables can be used to relate the data present in these tables.
What is data set in c sharp?
An in-memory database. The database contains tables and constraints, and data.
What is data dictionary what are the contents of it and for what is used?
Data dictionary it contains the names and description of the dictionary tables and views.
When designing a database you should reduce duplicate information which is known as .?
When designing a database, you should reduce duplicate information, which is known as normalization. This process involves organizing data into separate tables to minimize redundancy and improve data integrity. By normalizing a database, you can avoid data anomalies and maintain consistency in your data.
Explain the insert problem caused by a denormalized design?
Denormalized designs, by contrast, do contain duplicate data. If denormalized designs are created by merging two or more tables together into a single table, the resulting duplicate data creates insert, update, and delete problems.
What is a process designed to ensure the data within the tables contains the least amount of duplication?
Normalization =)
What is the database that contains tables linked by common fields?
A relational database is a database that contains tables linked by common fields. These common fields are used to establish connections between the tables and to retrieve related data across multiple tables using queries.
What does a database contain?
A database contains structured data organized in tables to store and manage information efficiently. It typically includes fields for different data types, rows for individual records, and relationships between tables to establish data integrity. The data can be retrieved, manipulated, and queried using database management systems.
What is a process designed to ensure the data within the relations tables contains the least amount of duplication?
Normalization =)
Duplicate data in multiple data files is?
Data backups
What is multi-user of databases?
There are several types of databases- such as "relational" (Oracle for example). Multi-user database is a database that contains (normally) several "tables" where each table has rows and columns, and where these rows and columns intersect is a "data element". Multi user databases support several concurrent users (simultaneous) for reading or writing data to the tables in the database. For example, a list of addresses, phone numbers and names for a city could be a table. With other tables having other demographic data. Several users could "search" for a variety of combinations of this data, while another group of users could be adding more "records" (data elements).
